Canary testing is a deployment strategy that allows software teams to test new features or updates on a small portion of users before releasing them to the entire user base. The term originates from the practice of using canary birds in coal mines to detect toxic gases—if the bird became ill or died, it signaled danger to the miners. Similarly, in software, canary testing serves as an early warning system for potential issues in a new release. https://testomat.io/blog/canary-testing-the-key-to-safe-software-releases/