Operations & Automation
Concepts for running an estate repeatably instead of by hand.
| Term | What it means | Key distinction |
|---|---|---|
| infrastructure as code | Provision from definition files | Repeatable, versioned, no drift |
| Tags | Key-value metadata on resources | Drives cost, access, automation |
| Resource Groups | Logical collection of resources | Act on many at once; built on Tags |
| lifecycle policies | Auto-transition/expire S3 objects | Cost optimization without app changes |
| managed AWS services | AWS handles the heavy lifting | The more managed, the less you own |
- Tags are the metadata; Resource Groups act on resources that share them.