Microservices

Architecture

Decompose applications into small, independent functions:

• API Gateway or ALB for routing
• Lambda for individual service logic
• Step Functions for orchestration
• EventBridge for service communication

When to Use

This pattern is ideal when you need:

• Independent team ownership
• Different scaling requirements per service
• Flexibility in technology choices
• Rapid iteration and deployment

Considerations

• Cold start latency for infrequently called functions
• Function size limits (250MB deployment package)
• Distributed tracing complexity
• State management across functions