A company is building a serverless application on AWS.

Requirement Summary:

Deployserverless applicationusing:

API Gateway

AWS Lambda

Needdev, test, and prodenvironments

Wantleast development effort

Evaluate Options:

Option A: API Gateway stage variables + Lambda aliases

✅Most efficient and scalable

API Gateway supportsstage variables(like env)

Lambda supportsaliases(e.g., dev, test, prod)

You can configureeach stage to point to a different aliasof the same function version

Enablesversioning,isolation, andlow effort management

Option B: Use Amazon ECS

❌Overkill for a serverless setup

ECS is container-based, not serverless

Introduces unnecessary complexity

Option C: Duplicate code for each environment

❌High operational overhead and poor maintainability

Option D: Use Elastic Beanstalk

❌Not applicable: Elastic Beanstalk is for traditional app hosting, not optimal forLambda + API Gateway

Lambda Aliases:https://docs.aws.amazon.com/lambda/latest/dg/configuration-aliases.html

API Gateway Stage Variables:https://docs.aws.amazon.com/apigateway/latest/developerguide/stage-variables.html