Explaining the concept of blue/green deployment

Blue/green deployment is very similar to canary deployment in the sense that it deploys new versions of an application using the process of partition. The blue/green method deploys the application into a subset of servers in the production environment and then propagates the new version to the remaining servers. This deployment pattern differs from canary deployment with regard to its goals, because the blue/green deployment aims to reduce an application's downtime during deployment. With canary deployment, however, the goal is to reduce the occurrence of an error in the production environment associated with the new version. Furthermore, with canary deployment, the production environment can stay with both a new version and an old version and receive requests simultaneously, while in a blue/green deployment, only one version responds to requests.

The blue/green deployment is a deployment pattern that makes it possible to deploy a new version...