Daily Term: Blue-Green Deployment

Blue-Green Deployment

Blue-Green Deployment is a strategy to reduce downtime and risk during releases by maintaining two identical environments: 'blue' (current production) and 'green' (new version). Traffic is switched from blue to green after testing the new version. For example, a web app might deploy a new version to the green environment, test it, then route users to green. This allows quick rollbacks by switching back to blue but requires double the infrastructure.

Date: 2025-09-18