The text explores key software release metrics, specifically Mean Time Between Failures (MTBF), Mean Time to Recovery (MTTR), Mean Time to Resolve (MTTRe), and Mean Time to Acknowledge (MTTA), highlighting their importance in assessing software quality and incident management. It discusses how traditional methods of evaluating software quality, such as counting bugs per release, are insufficient in the context of frequent releases, and emphasizes the value of these metrics in continuous delivery models where quick recovery and root cause resolution are crucial. The article underscores the need for efficient incident management practices, like on-call rotations, and suggests that focusing on improving these aggregate metrics can lead to better resource utilization and shift the focus from blame to process improvement. Additionally, it touches on how tools like Earthly can enhance build processes, potentially improving these metrics.