https://www.youtube.com/watch?v=KD1JHpzKW3Q
21:03 - If the tests pass and a human causes the deployment, that's "continuous delivery". If it's automatic, that's "continuous deployment".
26:00 - Service wrappers like Terraform - multiple cloud providers
33:14 - Diagnostic script - am I healthy
35:00 - Activity script - any pending tasks