Tech Stack

Language & Runtime

Technology	Version	Purpose
Go	1.25	Application implementation

Frameworks & Libraries

Library	Version	Purpose
Echo	v4	HTTP routing and middleware
aws-lambda-go	v1	Lambda handler interface
aws-lambda-go-api-proxy	v0.16	Bridge Lambda events to Echo
aws-sdk-go-v2	v2	AWS service client (S3)
swaggo/swag	v1	Auto-generate OpenAPI spec from Go comments
swaggo/echo-swagger	v1	Serve Swagger UI on Echo

Infrastructure & AWS Services

Service	Purpose
AWS Lambda	Application runtime (container image)
Amazon API Gateway	Provide HTTP endpoint and trigger Lambda
Amazon S3	Persist prompt JSON and generated images

Development Tools

Tool	Purpose
Docker	Build Lambda container image
swag CLI	Regenerate OpenAPI docs (make swagger)
Make	Task management: build, test, dev server, etc.