Dev productivity metrics have come a long way from the time when one use to measure the number of lines of code written or the PRs created. I think Dora metrics

Dev productivity metrics have come a long way from the time when one use to measure the number of lines of code written or the PRs created. I think Dora metrics is still a step up from that as it focuses on measuring team productivity vs individuals, and provides some indicator of the true bottlenecks for productivity.