Elastic Beanstalk

It's the Heroku alternative on AWS: you give it code, it provisions load balancers, scales instances, applies patches, and handles health checks ongoing. Covers both web server and worker environments, defaults to CLI orchestration but can generate CDK or Terraform if your project already uses them. The skill distinguishes when to use EB versus serverless or container orchestration, which matters because the choice affects who owns operational decisions long term. Good fit when you're migrating off Heroku or just don't want to think about instance management after initial deployment.