minor tweaks and copilot review edits

Author: DougAnsonAustinTX

content/learning-paths/servers-and-cloud-computing/openjdk-pacbti-gcp/_index.md

@@ -1,18 +1,19 @@
 ---
-title: Test for PAC/BTI support within OpenJDK on Google Cloud C4A Arm-based VMs
+title: Verify OpenJDK PAC/BTI support on Google Cloud C4A VMs
 
-description: Learn how to test OpenJDK and verify PAC/BTI support using a Google Cloud C4A Arm-based VM.
+description: Learn how to verify PAC/BTI support in OpenJDK on a Google Cloud C4A Arm-based VM and interpret the JVM readiness result.
 
 draft: true
 cascade:
     draft: true
 
-minutes_to_complete: 30   
+minutes_to_complete: 30
 
-who_is_this_for: This Learning Path is for developers who want to validate OpenJDK JVM PAC/BTI support on Google Cloud C4A Arm-based virtual machines.
+who_is_this_for: This Learning Path is for developers who want to validate OpenJDK PAC/BTI support on Google Cloud C4A Arm-based virtual machines.
 
 learning_objectives: 
-    - Provision an Google Cloud C4A Arm-based virtual machine with SuSE Enterprise Server.
+    - Provision a Google Cloud C4A Arm-based virtual machine with SUSE Linux Enterprise Server.
+    - Install OpenJDK on the Arm-based VM.
     - Verify PAC/BTI readiness in the installed JVM runtime.
 
 prerequisites:
@@ -62,3 +63,16 @@ weight: 1                       # _index.md always has weight of 1 to order corr
 layout: "learningpathall"       # All files under learning paths have this same wrapper
 learning_path_main_page: "yes"  # This should be surfaced when looking for related content. Only set for _index.md of learning path content.
 ---
+
+## Verify OpenJDK PAC/BTI support on Google Cloud C4A VMs
+
+In this Learning Path, you create a Google Cloud C4A Arm-based virtual machine, install OpenJDK on SUSE Linux Enterprise Server, and run a JVM probe that checks whether PAC and BTI are exposed to userspace. The result tells you whether the installed Java runtime can use these Armv9 security features on the VM.
+
+## What you'll do
+
+You will complete one task from start to finish:
+
+1. Create a Google Cloud C4A virtual machine.
+2. Install OpenJDK on the VM.
+3. Run the PAC/BTI validation script inside the JVM.
+4. Interpret the final result as positive, negative, or inconclusive.

content/learning-paths/servers-and-cloud-computing/openjdk-pacbti-gcp/background.md

@@ -6,7 +6,7 @@ weight: 2
 layout: "learningpathall"
 ---
 
-## Explore Google Axion C4A instances in Google Cloud
+## Explore Google Cloud C4A instances
 
 Google Axion C4A is a family of Arm-based VMs built on Google's custom Axion processors, which use Arm Neoverse-V2 cores. These VMs deliver high performance with improved energy efficiency for modern cloud workloads such as CI/CD pipelines, microservices, media processing, and general-purpose applications.
 
@@ -22,6 +22,6 @@ Armv9 Pointer Authentication (PAC) and Branch Target Identification (BTI) are se
 
 ## What you've learned and what's next
 
-You now have the background on Azure Cobalt 100, OpenJDK, and Armv9 PAC/BTI features.
+You now have the background on Google Cloud C4A, OpenJDK, and Armv9 PAC/BTI features.
 
-Next, you'll create an Arm-based Azure VM, install OpenJDK, and validate PAC/BTI readiness in the installed JVM.
+Next, you'll create an Arm-based Google Cloud VM, install OpenJDK, and validate PAC/BTI readiness in the installed JVM.

content/learning-paths/servers-and-cloud-computing/openjdk-pacbti-gcp/instance.md

@@ -25,7 +25,7 @@ To create a VM using the C4A instance type:
   - Set **Series** to **C4A**.
   - Select **c4a-standard-4** as the machine type.
 
-![Google Cloud Console VM creation page with the C4A machine series selected and the c4a-standard-4 machine type highlighted alt-txt#center](images/gcp-vm.png "Creating a Google Axion C4A VM in the Google Cloud Console")
+![Google Cloud Console VM creation page showing the C4A series and c4a-standard-4 machine type selection. Use this screen to confirm you are creating an Arm-based C4A instance.#center](images/gcp-vm.png "Creating a Google Axion C4A VM in the Google Cloud Console")
 
 - Under **OS and storage**, select **Change**, and then choose an Arm64-based operating system image.
   - For this Learning Path, select **SUSE Linux Enterprise Server**.
@@ -36,10 +36,12 @@ To create a VM using the C4A instance type:
 
 After the instance starts, click **SSH** next to the VM in the instance list to open a browser-based terminal session.
 
-![Google Cloud Console VM instances list with the SSH button highlighted for a running C4A instance alt-txt#center](images/gcp-ssh.png "Connecting to a running C4A VM using SSH")
+![Google Cloud Console VM instances list showing the SSH button for a running C4A instance. Use SSH to open a terminal session on the new VM.#center](images/gcp-ssh.png "Connecting to a running C4A VM using SSH")
 
 A new browser window opens with a terminal connected to your VM.
 
-![Browser-based terminal window showing a command prompt on a SUSE Linux VM running on Google Axion C4A alt-txt#center](images/gcp-shell.png "Terminal session connected to the VM")
+![Browser-based terminal window showing a command prompt on a SUSE Linux VM running on Google Axion C4A. Use this terminal to install OpenJDK and run the PAC/BTI validation script.#center](images/gcp-shell.png "Terminal session connected to the VM")
 
-Next, install the OpenJDK JVM on your VM.
+## What you've learned and what's next
+
+In this section, you created a Google Cloud C4A virtual machine and opened an SSH session to the VM. Next, you will install OpenJDK and prepare the PAC/BTI validation script. Next, install the OpenJDK JVM on your VM.

content/learning-paths/servers-and-cloud-computing/openjdk-pacbti-gcp/jvm-testing.md

@@ -6,7 +6,7 @@ weight: 4
 layout: learningpathall
 ---
 
-### Install the default OpenJDK JVM
+## Install the default OpenJDK JVM
 
 Install the default OpenJDK Java VM:
 
@@ -29,11 +29,11 @@ OpenJDK Runtime Environment (build 17.0.13+11-suse-150400.3.48.2-aarch64)
 OpenJDK 64-Bit Server VM (build 17.0.13+11-suse-150400.3.48.2-aarch64, mixed mode, sharing)
 ```
 
-Next, download and run a script to confirm PAC/BTI readiness in the JVM you just built and installed.
+Next, download and run a script to confirm PAC/BTI readiness in the JVM you just installed.
 
-### Setup the test script
+## Set up the test script
 
-Copy and paste the following script into your C4A ssh session. Save this as file "test-pacbti.sh":
+Copy and paste the following script into your C4A SSH session. Save it as `test-pacbti.sh`:
 
 ```bash
 #!/usr/bin/env bash
@@ -76,11 +76,11 @@ Copy and paste the following script into your C4A ssh session. Save this as file
 #   - OpenJDK 11+ for Java source-file mode, or javac available as fallback
 #
 # Usage:
-#   chmod +x jvm-aarch64-pac-bti-test.sh
-#   ./jvm-aarch64-pac-bti-test.sh
+#   chmod +x test-pacbti.sh
+#   ./test-pacbti.sh
 #
 # Optional:
-#   JAVA=/path/to/java ./jvm-aarch64-pac-bti-test.sh
+#   JAVA=/path/to/java ./test-pacbti.sh
 
 set -u
 
@@ -331,7 +331,7 @@ else
 fi
 ```
 
-### Run the test script
+## Run the test script
 
 In your SSH session, run the test script to confirm PAC/BTI enablement:
 
@@ -384,7 +384,7 @@ FINAL RESULT: POSITIVE
 Meaning     : The JVM is executing on Linux/AArch64 with PAC and BTI exposed to userspace.
 ```
 
-### What you've learned
+## What you've learned and what's next
 
 Most OpenJDK builds are distributed with PAC/BTI enabled but optionally used by default because they must remain compatible with older Arm platforms. When you need these protections, you can build and register your own JVM with branch protection support.