azure-architecture-patternslisted

# Azure Architecture Patterns > Well-Architected Framework principles, reference architectures, and Azure best practices. ## The Five Pillars | Pillar | Focus | Key Question | |--------|-------|--------------| | Reliability | Resiliency, availability | Will it stay up? | | Security | Protection, compliance | Is it safe? | | Cost Optimization | Efficiency, value | Is it worth it? | | Operational Excellence | Manageability, observability | Can we run it? | | Performance Efficiency | Scalability, responsiveness | Is it fast enough? | ## Reliability Patterns ### Key Patterns - **Circuit Breaker**: Fail fast when downstream unhealthy (Polly) - **Retry with Backoff**: Handle transient failures with exponential delays - **Availability Zones**: Distribute across datacenters ### Reliability Checklist - [ ] Single points of failure identified and mitigated - [ ] Health endpoints implemented (`/health`, `/ready`) - [ ] Retry policies with backoff - [ ] Circuit breakers for external dependencies - [ ] Availability zones utilized - [ ] RTO/RPO defined and tested ## Security Patterns ### Zero Trust | Principle | Implementation | |-----------|----------------| | Verify explicitly | Always authenticate/authorize | | Least privilege | Minimal necessary permissions | | Assume breach | Segment, encrypt, detect | ### Identity - **Managed Identity**: Eliminate credential management - **RBAC**: Built-in roles, scope to resource group, use groups ### Network - **Private Endpoints**: