diff --git a/.github/actions/send_failure/action.yml b/.github/actions/send_failure/action.yml
deleted file mode 100644
index 8481b0b803..0000000000
--- a/.github/actions/send_failure/action.yml
+++ /dev/null
@@ -1,28 +0,0 @@
-name: "Send failure event to Datadog"
-inputs:
-  api-key:
-    description: "Datadog API key"
-    required: true
-  title:
-    description: "Custom title for the event"
-    required: true    
-runs:
-  using: "composite"
-  steps:
-    - uses: masci/datadog@v1
-      with:
-        api-key: ${{ inputs.api-key }}
-        api-url: https://api.datadoghq.eu
-        events: |
-          - title: "${{ inputs.title }}"
-            text: "Job ${{ github.job }} in branch ${{ github.ref_name }}"
-            alert_type: "error"
-            source_type_name: "Github"
-            host: ${{ github.repository_owner }}
-            tags:
-              - "project:${{ github.repository }}"
-              - "job:${{ github.job }}"
-              - "run_id:${{ github.run_id }}"
-              - "workflow:${{ github.workflow }}"
-              - "branch:${{ github.ref_name }}"
-              - "url:https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
\ No newline at end of file
diff --git a/.github/workflows/CI_license_compliance.yml b/.github/workflows/CI_license_compliance.yml
index 04242b74ca..5663153b9e 100644
--- a/.github/workflows/CI_license_compliance.yml
+++ b/.github/workflows/CI_license_compliance.yml
@@ -11,7 +11,6 @@ on:
     - cron: "0 0 * * *" # every day at midnight
 
 env:
-  CORE_DATADOG_API_KEY: ${{ secrets.CORE_DATADOG_API_KEY }}
   PYTHON_VERSION: "3.10"
   EXCLUDE_PACKAGES: "(?i)^(azure-identity|fastembed|ragas|tqdm|psycopg|mistralai|pgvector).*"
 
@@ -90,11 +89,8 @@ jobs:
         if: ${{ always() }}
         run: echo "${{ steps.license_check_report.outputs.report }}"
 
-      - name: Send event to Datadog for nightly failures
+      - name: Notify Slack on nightly failure
         if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+        uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations license compliance nightly failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
-          
\ No newline at end of file
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
\ No newline at end of file
diff --git a/.github/workflows/aimlapi.yml b/.github/workflows/aimlapi.yml
index 6b3be4f702..7c8201137e 100644
--- a/.github/workflows/aimlapi.yml
+++ b/.github/workflows/aimlapi.yml
@@ -71,10 +71,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/amazon_bedrock.yml b/.github/workflows/amazon_bedrock.yml
index 844582f06e..b3420f71ae 100644
--- a/.github/workflows/amazon_bedrock.yml
+++ b/.github/workflows/amazon_bedrock.yml
@@ -92,10 +92,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/amazon_sagemaker.yml b/.github/workflows/amazon_sagemaker.yml
index 5ba525dbc3..c3903aa53a 100644
--- a/.github/workflows/amazon_sagemaker.yml
+++ b/.github/workflows/amazon_sagemaker.yml
@@ -69,10 +69,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/anthropic.yml b/.github/workflows/anthropic.yml
index 31740b545d..c75de0d8c3 100644
--- a/.github/workflows/anthropic.yml
+++ b/.github/workflows/anthropic.yml
@@ -70,10 +70,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/arcadedb.yml b/.github/workflows/arcadedb.yml
index 58c3cb0f31..61b8f0c703 100644
--- a/.github/workflows/arcadedb.yml
+++ b/.github/workflows/arcadedb.yml
@@ -75,10 +75,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/astra.yml b/.github/workflows/astra.yml
index 264e0c8a35..07a68bedb9 100644
--- a/.github/workflows/astra.yml
+++ b/.github/workflows/astra.yml
@@ -73,10 +73,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/azure_ai_search.yml b/.github/workflows/azure_ai_search.yml
index 6909836bc9..5c698dc91e 100644
--- a/.github/workflows/azure_ai_search.yml
+++ b/.github/workflows/azure_ai_search.yml
@@ -67,10 +67,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/azure_doc_intelligence.yml b/.github/workflows/azure_doc_intelligence.yml
index 8dd73122e1..c5bf4214e3 100644
--- a/.github/workflows/azure_doc_intelligence.yml
+++ b/.github/workflows/azure_doc_intelligence.yml
@@ -67,10 +67,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/chroma.yml b/.github/workflows/chroma.yml
index 0e60970b9c..82dd62ca41 100644
--- a/.github/workflows/chroma.yml
+++ b/.github/workflows/chroma.yml
@@ -73,10 +73,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/cohere.yml b/.github/workflows/cohere.yml
index ac0e1dcead..943d65a598 100644
--- a/.github/workflows/cohere.yml
+++ b/.github/workflows/cohere.yml
@@ -70,10 +70,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/cometapi.yml b/.github/workflows/cometapi.yml
index 6cfaf92863..6806bc46ba 100644
--- a/.github/workflows/cometapi.yml
+++ b/.github/workflows/cometapi.yml
@@ -71,10 +71,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }} 
\ No newline at end of file
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/deepeval.yml b/.github/workflows/deepeval.yml
index 3846cad0f7..ec68be8663 100644
--- a/.github/workflows/deepeval.yml
+++ b/.github/workflows/deepeval.yml
@@ -69,10 +69,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
\ No newline at end of file
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/elasticsearch.yml b/.github/workflows/elasticsearch.yml
index f872e8b472..e1a2a3dfc3 100644
--- a/.github/workflows/elasticsearch.yml
+++ b/.github/workflows/elasticsearch.yml
@@ -67,10 +67,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/faiss.yml b/.github/workflows/faiss.yml
index f78bf2b586..99e6c18e59 100644
--- a/.github/workflows/faiss.yml
+++ b/.github/workflows/faiss.yml
@@ -67,10 +67,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/fastembed.yml b/.github/workflows/fastembed.yml
index 5c86fd5b1d..4fd6bac472 100644
--- a/.github/workflows/fastembed.yml
+++ b/.github/workflows/fastembed.yml
@@ -53,10 +53,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/firecrawl.yml b/.github/workflows/firecrawl.yml
index 683b63a427..0d4276f348 100644
--- a/.github/workflows/firecrawl.yml
+++ b/.github/workflows/firecrawl.yml
@@ -65,10 +65,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/github.yml b/.github/workflows/github.yml
index dce7aa9152..0e870c5064 100644
--- a/.github/workflows/github.yml
+++ b/.github/workflows/github.yml
@@ -68,10 +68,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/google_genai.yml b/.github/workflows/google_genai.yml
index 9ed43b76f3..f8f58ae5bb 100644
--- a/.github/workflows/google_genai.yml
+++ b/.github/workflows/google_genai.yml
@@ -70,10 +70,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }} 
\ No newline at end of file
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/hanlp.yml b/.github/workflows/hanlp.yml
index 6909d51d8a..bf06a93ff3 100644
--- a/.github/workflows/hanlp.yml
+++ b/.github/workflows/hanlp.yml
@@ -75,10 +75,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/jina.yml b/.github/workflows/jina.yml
index e107a694db..122a4b05b5 100644
--- a/.github/workflows/jina.yml
+++ b/.github/workflows/jina.yml
@@ -69,10 +69,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/langfuse.yml b/.github/workflows/langfuse.yml
index d6f37c38fc..43cf19a537 100644
--- a/.github/workflows/langfuse.yml
+++ b/.github/workflows/langfuse.yml
@@ -75,10 +75,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/lara.yml b/.github/workflows/lara.yml
index 470a40fb94..1dd188fec5 100644
--- a/.github/workflows/lara.yml
+++ b/.github/workflows/lara.yml
@@ -67,10 +67,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
\ No newline at end of file
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/llama_cpp.yml b/.github/workflows/llama_cpp.yml
index 5a0ebbd8a7..f4f0dc67d3 100644
--- a/.github/workflows/llama_cpp.yml
+++ b/.github/workflows/llama_cpp.yml
@@ -83,10 +83,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/llama_stack.yml b/.github/workflows/llama_stack.yml
index 001ecb35d2..16d1c3464b 100644
--- a/.github/workflows/llama_stack.yml
+++ b/.github/workflows/llama_stack.yml
@@ -133,10 +133,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
\ No newline at end of file
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/mcp.yml b/.github/workflows/mcp.yml
index d0b73f3286..e334eda9a5 100644
--- a/.github/workflows/mcp.yml
+++ b/.github/workflows/mcp.yml
@@ -83,10 +83,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/meta_llama.yml b/.github/workflows/meta_llama.yml
index 2be9e38afc..ee8dfc834c 100644
--- a/.github/workflows/meta_llama.yml
+++ b/.github/workflows/meta_llama.yml
@@ -71,10 +71,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/mistral.yml b/.github/workflows/mistral.yml
index 3188127ad5..c2fc86e00d 100644
--- a/.github/workflows/mistral.yml
+++ b/.github/workflows/mistral.yml
@@ -71,10 +71,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/mongodb_atlas.yml b/.github/workflows/mongodb_atlas.yml
index 9cb3865be9..e450e130c5 100644
--- a/.github/workflows/mongodb_atlas.yml
+++ b/.github/workflows/mongodb_atlas.yml
@@ -66,10 +66,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/nvidia.yml b/.github/workflows/nvidia.yml
index 4da192b9ae..e61068ba29 100644
--- a/.github/workflows/nvidia.yml
+++ b/.github/workflows/nvidia.yml
@@ -72,10 +72,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/ollama.yml b/.github/workflows/ollama.yml
index a782eb84f0..f476d37023 100644
--- a/.github/workflows/ollama.yml
+++ b/.github/workflows/ollama.yml
@@ -108,10 +108,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/openrouter.yml b/.github/workflows/openrouter.yml
index dd2a169ab1..3529794508 100644
--- a/.github/workflows/openrouter.yml
+++ b/.github/workflows/openrouter.yml
@@ -70,10 +70,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/opensearch.yml b/.github/workflows/opensearch.yml
index 3533dd753d..3655e311a2 100644
--- a/.github/workflows/opensearch.yml
+++ b/.github/workflows/opensearch.yml
@@ -67,10 +67,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/optimum.yml b/.github/workflows/optimum.yml
index 8e28971d8c..fa9949db15 100644
--- a/.github/workflows/optimum.yml
+++ b/.github/workflows/optimum.yml
@@ -71,10 +71,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/paddleocr.yml b/.github/workflows/paddleocr.yml
index 73f1d055d6..94a8c51908 100644
--- a/.github/workflows/paddleocr.yml
+++ b/.github/workflows/paddleocr.yml
@@ -71,10 +71,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/pgvector.yml b/.github/workflows/pgvector.yml
index 3185f9e964..af736de2b3 100644
--- a/.github/workflows/pgvector.yml
+++ b/.github/workflows/pgvector.yml
@@ -73,10 +73,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/pinecone.yml b/.github/workflows/pinecone.yml
index 83b2bfd352..8b39a052ea 100644
--- a/.github/workflows/pinecone.yml
+++ b/.github/workflows/pinecone.yml
@@ -76,10 +76,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/pyversity.yml b/.github/workflows/pyversity.yml
index 618e37389f..9b9b1bf27f 100644
--- a/.github/workflows/pyversity.yml
+++ b/.github/workflows/pyversity.yml
@@ -54,10 +54,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/qdrant.yml b/.github/workflows/qdrant.yml
index 5e30bba9b4..3642b301c4 100644
--- a/.github/workflows/qdrant.yml
+++ b/.github/workflows/qdrant.yml
@@ -69,10 +69,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/ragas.yml b/.github/workflows/ragas.yml
index 5cce1a0c23..573969a90f 100644
--- a/.github/workflows/ragas.yml
+++ b/.github/workflows/ragas.yml
@@ -70,10 +70,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/snowflake.yml b/.github/workflows/snowflake.yml
index 68dff55807..c49388fa51 100644
--- a/.github/workflows/snowflake.yml
+++ b/.github/workflows/snowflake.yml
@@ -69,10 +69,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/stackit.yml b/.github/workflows/stackit.yml
index a757e31f83..bc11a1770a 100644
--- a/.github/workflows/stackit.yml
+++ b/.github/workflows/stackit.yml
@@ -70,10 +70,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/togetherai.yml b/.github/workflows/togetherai.yml
index 879c3782ce..0433d915ab 100644
--- a/.github/workflows/togetherai.yml
+++ b/.github/workflows/togetherai.yml
@@ -70,10 +70,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/unstructured.yml b/.github/workflows/unstructured.yml
index e7981897c1..758cdaab89 100644
--- a/.github/workflows/unstructured.yml
+++ b/.github/workflows/unstructured.yml
@@ -82,10 +82,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/valkey.yml b/.github/workflows/valkey.yml
index 7f53163519..8abd35a2ac 100644
--- a/.github/workflows/valkey.yml
+++ b/.github/workflows/valkey.yml
@@ -75,10 +75,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
\ No newline at end of file
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/watsonx.yml b/.github/workflows/watsonx.yml
index 963a547d62..aac4b5c3cd 100644
--- a/.github/workflows/watsonx.yml
+++ b/.github/workflows/watsonx.yml
@@ -71,10 +71,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/weave.yml b/.github/workflows/weave.yml
index bb515676fc..700369ae10 100644
--- a/.github/workflows/weave.yml
+++ b/.github/workflows/weave.yml
@@ -66,10 +66,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/.github/workflows/weaviate.yml b/.github/workflows/weaviate.yml
index 1b06d2f7fe..d60a9d41d2 100644
--- a/.github/workflows/weaviate.yml
+++ b/.github/workflows/weaviate.yml
@@ -67,10 +67,11 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:unit
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}
diff --git a/scripts/utils/templates/workflow.yml b/scripts/utils/templates/workflow.yml
index 2e23cb88c7..a57f60a83b 100644
--- a/scripts/utils/templates/workflow.yml
+++ b/scripts/utils/templates/workflow.yml
@@ -68,10 +68,12 @@ jobs:
           hatch -e test env run -- uv pip install git+https://github.com/deepset-ai/haystack.git@main
           hatch run test:cov-retry
 
-      - name: Send event to Datadog for nightly failures
-        if: failure() && github.event_name == 'schedule'
-        uses: ./.github/actions/send_failure
+
+  notify-slack-on-failure:
+    needs: run
+    if: failure() && github.event_name == 'schedule'
+    runs-on: ubuntu-slim
+    steps:
+      - uses: deepset-ai/notify-slack-action@v1
         with:
-          title: |
-            Core integrations nightly tests failure: ${{ github.workflow }}
-          api-key: ${{ secrets.CORE_DATADOG_API_KEY }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_NOTIFICATIONS }}