azure-app-configuration

# Azure App Configuration Skill

This skill provides expert guidance for Azure App Configuration. Covers troubleshooting, best practices, decision making, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.

## How to Use This Skill

> **IMPORTANT for Agent**: Use the **Category Index** below to locate relevant sections. For categories with line ranges (e.g., `L35-L120`), use `read_file` with the specified lines. For categories with file links (e.g., `[security.md](security.md)`), use `read_file` on the linked reference file

> **IMPORTANT for Agent**: If `metadata.generated_at` is more than 3 months old, suggest the user pull the latest version from the repository. If `mcp_microsoftdocs` tools are not available, suggest the user install it: [Installation Guide](https://github.com/MicrosoftDocs/mcp/blob/main/README.md)

This skill requires **network access** to fetch documentation content:
- **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch` with query string `from=learn-agent-skill`. Returns Markdown.
- **Fallback**: Use `fetch_webpage` with query string `from=learn-agent-skill&accept=text/markdown`. Returns Markdown.

## Category Index

| Category | Lines | Description |
|----------|-------|-------------|
| Troubleshooting | L36-L40 | Diagnosing and fixing Azure App Configuration network access issues, including connectivity failures, firewall/VNet restrictions, private endpoints, and common error patterns. |
| Best Practices | L41-L45 | Guidance on designing and using App Configuration efficiently: key/value organization, labeling, feature flags, performance, security, and cost-optimized access patterns. |
| Decision Making | L46-L51 | Guidance on App Configuration client library support lifecycles and how to upgrade Spring Boot apps to use App Configuration library v6. |
| Limits & Quotas | L52-L60 | Limits on key-value retention, point-in-time reads, soft delete behavior, preview API lifecycles, and REST API throttling/quotas for Azure App Configuration. |
| Security | L61-L79 | Securing App Configuration using encryption, RBAC, managed identities, keys/HMAC, REST auth/authorization models, network perimeters, and Azure Policy compliance controls. |
| Configuration | L80-L98 | Configuring App Configuration behavior: feature flags, filters, snapshots, geo-replication, soft delete, Kubernetes provider, emulator, dynamic refresh, and AI/chat completion settings. |
| Integrations & Coding Patterns | L99-L188 | Patterns and code samples for integrating Azure App Configuration into .NET, Go, JavaScript, Python, AKS, Event Grid, and AI apps, including dynamic config, feature flags, filters, and REST/Key Vault usage |
| Deployment | L189-L197 | Using App Configuration in CI/CD: exporting/importing settings, creating snapshots, integrating with Azure Pipelines, GitHub Actions, and Helm/Kubernetes deployment workflows. |

### Troubleshooting
| Topic | URL |
|-------|-----|
| Diagnose Azure App Configuration network access errors | https://learn.microsoft.com/en-us/azure/azure-app-configuration/network-access-errors |

### Best Practices
| Topic | URL |
|-------|-----|
| Apply Azure App Configuration usage best practices | https://learn.microsoft.com/en-us/azure/azure-app-configuration/howto-best-practices |

### Decision Making
| Topic | URL |
|-------|-----|
| Understand support lifecycle for App Configuration client libraries | https://learn.microsoft.com/en-us/azure/azure-app-configuration/client-library-support-policy |
| Upgrade Spring Boot apps to App Configuration library v6 | https://learn.microsoft.com/en-us/azure/azure-app-configuration/howto-convert-to-the-new-spring-boot |

### Limits & Quotas
| Topic | URL |
|-------|-----|
| Use point-in-time key-value retrieval with tier limits | https://learn.microsoft.com/en-us/azure/azure-app-configuration/concept-point-time-snapshot |
| Understand preview API lifecycle and deprecation timelines for App Configuration | https://learn.microsoft.com/en-us/azure/azure-app-configuration/concept-preview-api-life-cycle |
| Understand soft delete behavior and retention in App Configuration | https://learn.microsoft.com/en-us/azure/azure-app-configuration/concept-soft-delete |
| Retention limits for App Configuration key-value revisions | https://learn.microsoft.com/en-us/azure/azure-app-configuration/rest-api-revisions |
| Throttling limits and quotas for App Configuration REST | https://learn.microsoft.com/en-us/azure/azure-app-configuration/rest-api-throttling |

### Security
| Topic | URL |
|-------|-----|
| Encrypt App Configuration data with customer-managed keys | https://learn.microsoft.com/en-us/azure/azure-app-configuration/concept-customer-managed-keys |
| Configure Entra ID RBAC for Azure App Configuration access | https://learn.microsoft.com/en-us/azure/azure-app-configuration/concept-enable-rbac |
| Configure network security perimeters for App Configuration | https://learn.microsoft.com/en-us/azure/azure-app-configuration/concept-network-security-perimeter |
| Manage access key authentication for Azure App Configuration | https://learn.microsoft.com/en-us/azure/azure-app-configuration/howto-disable-access-key-authentication |
| Use managed identities to access Azure App Configuration | https://learn.microsoft.com/en-us/azure/azure-app-configuration/howto-integrate-azure-managed-service-identity |
| Configure managed identities for Azure App Configuration | https://learn.microsoft.com/en-us/azure/azure-app-configuration/overview-managed-identity |
| Apply built-in Azure Policy definitions to App Configuration | https://learn.microsoft.com/en-us/azure/azure-app-configuration/policy-reference |
| Configure roles and permissions for App Configuration deployments | https://learn.microsoft.com/en-us/azure/azure-app-configuration/quickstart-deployment-overview |
| Authenticate to App Configuration REST with