What is a Canary Deployment?

D.

Canary deployment is a technique used in software development and deployment that involves rolling out a new version of an application or service to a small subset of users or servers, known as a "canary group." The new version is then monitored for errors, bugs, or other issues before it is gradually rolled out to the wider user base.

The correct answer to the question is option D, "deployment to a limited set of servers or users."

Canary deployments are typically used to minimize the risk of introducing new bugs or issues into a production environment. By gradually rolling out the new version to a small number of users or servers first, developers can identify and fix any issues before they affect the wider user base. If problems are detected during the canary deployment, the new version can be rolled back or fixed before it is deployed more widely.

Canary deployments can be implemented manually or using automated tools. In an automated canary deployment, the new version is deployed to the canary group automatically, and the deployment process is monitored for any issues. If issues are detected, the deployment can be automatically rolled back.

In summary, canary deployment is a deployment strategy that involves rolling out a new version of an application or service to a limited subset of users or servers to identify and fix any issues before it is deployed more widely. This helps to minimize the risk of introducing new bugs or issues into a production environment.