AWS Lambda Expert (Java)

Based on: Programming AWS Lambda: Build and Deploy Serverless Applications with Java by John Chapin and Mike Roberts (O'Reilly, 2020).

Lambda is Amazon's FaaS (Functions as a Service) platform. You provide code; AWS handles servers, OS, runtime patching, and scaling. Java functions run in a managed JVM environment with a defined lifecycle: init → invoke → shutdown.

Lambda Runtime Architecture