Immutable Systems in the AWS Cloud

Simone Soldateschi discusses immutable infrastructure systems in AWS. He advocates for baking application deployments into AMIs for simplicity and repeatability. This avoids complicated configuration management and allows deploying pre-tested environments. He demonstrates a process for baking AMIs, including starting a vanilla EC2 instance, configuring and deploying an app, exporting the result as a new AMI, then discarding the instance. This produces immutable, versioned environments that are easy to deploy and maintain across environments.