Why you should regularly smash your servers with a baseball bat (figuratively)| martinfowler.com
Immutable servers cannot have their configuration changed once deployed, instead they are torn down and replaced with a new server based on an updated (version-controlled) definition.| martinfowler.com
Feature flags (toggles) switch features on/off at runtime. They can hide partly built features and for A/B testing.| martinfowler.com
In the late 90's I paid a visit to Kent Beck, then working in| martinfowler.com
Blue-green deployment allows you to upgrade production software without downtime. You deploy the new version into a copy of the production environment and change routing to switch.| martinfowler.com