/aws/lambda

AWS Lambda

Run code without provisioning servers. You upload a function; AWS runs it on demand, scales it to zero when idle, and bills per millisecond of execution. Great fit for event-driven glue — S3 triggers, SQS consumers, thin API endpoints. Wrong fit for long-running work, VPC-heavy networking, and code that depends on warm connections.

Articles (1)

2026-08-18 Tutorial

Lambda Invocation Models: The Architecture Decision Hiding in Plain Sight

Synchronous, asynchronous, and poll-based invocation give the same Lambda code completely different failure modes, retry behavior, and scaling. A field guide to choosing, plus the three front doors for HTTPS: Function URLs, API Gateway, and ALB.

#aws #lambda #serverless #backend-engineering #distributed-systems · 11 min read