ITGSS Certified DevOps Engineer Practice Test

A 'blue-green deployment' strategy primarily aims to achieve zero downtime during the deployment process. This approach involves maintaining two identical environments: one that is live (let's call it 'blue') and another that serves as a staging area for new releases (referred to as 'green').

When a new version of the software is ready, it is deployed to the 'green' environment, allowing for thorough testing while the 'blue' environment continues to serve users with the current version. Once the new version in the 'green' environment is validated, the production traffic can be switched from 'blue' to 'green'. This switch can be done almost instantaneously, allowing users to benefit from the upgraded application without experiencing service interruptions.

This method minimizes the risk associated with software releases since any issues can easily be rolled back by directing traffic back to the previous environment. Therefore, the primary goal is to ensure a seamless experience for the end users, achieving zero downtime.

While aspects like maximizing hardware usage or ensuring all users have the same version of software may be considerations in a broader deployment strategy, they are not the primary objectives of the blue-green deployment technique. Additionally, reducing time to deploy software is a benefit of many deployment practices, but the distinguishing