Automate Deployment Testing | 🏗️ Build A Version Management System

Short summary

Lambda version management uses immutable published versions and mutable aliases to enable safe deployments while avoiding $LATEST in production. Weighted aliases support canary deployments that roll back automatically on CloudWatch alarms. Hands-on tutorial covers publishing versions, creating aliases, managing traffic routing, and reviewing CloudFormation change sets.

• •Published Lambda versions are immutable snapshots; aliases are mutable pointers for environment mapping (dev/staging/prod)
• •Weighted aliases enable canary deployments with automatic rollback on CloudWatch alarms for safer rollouts
• •Step-by-step guide covers version publishing, alias creation, traffic splitting, and CloudFormation change set review

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