Add Provider Support for Cloud-based Parameter Stores (e.g., AWS SSM, GCP Parameter Manager, Azure App Config)

[mahpatil]

Description:
OpenFeature currently supports various providers for feature flag management. It would be valuable to extend this support by adding a provider (or a set of providers) for cloud-native parameter stores, which are commonly used in enterprise environments for storing configuration and secrets.

These parameter/configuration stores include:

• AWS Systems Manager Parameter Store
• Google Cloud Parameter/Secret Manager Manager
• Azure App Configuration / Key Vault

Adding support for these services would enable OpenFeature users to:

1. Leverage existing cloud-native infrastructure
2. Dynamically fetch feature flags or configuration values stored in these systems
3. Improve consistency and reduce duplication across infrastructure and application layers

Proposed Solution:
Implement a separate providers per cloud that can:

1. Connect securely to the respective parameter/config store
2. Fetch values at runtime (optionally cache them)
3. Map keys to OpenFeature flag format
4. Handle authentication via cloud-native SDKs (IAM roles, service accounts, etc.)

Benefits:

1. Seamless integration with existing cloud infrastructure
2. Improved developer experience for cloud-first teams
3. Encourages unified configuration management practices

Potential Challenges:

• Differences in data models and access patterns across cloud platforms
• Managing credentials securely across environments
• Standardizing behavior for flag evaluation

Related Links:
AWS Parameter Store
GCP Parameter Manager
Azure App Configuration

Notes:
If there's alignment with the OpenFeature roadmap, I’d be happy to collaborate on a proposal or contribute a reference implementation.