Different person, but during a deploy the pipeline checks some the APM metrics (error rate, new errors, latency) to determine if it should roll back the deploy.

Different person, but during a deploy the pipeline checks some the APM metrics (error rate, new errors, latency) to determine if it should roll back the deploy. A previous company would do a canary deployment (like 2 out of 60 instances), wait 20 minutes and only proceed to a full deploy if the canary instances had similar error & latency rates.