Terms beginning with L span traffic, quality and observability — load balancers, linting, latency and logging. Every definition is written to be clear and quotable.
Lead time for changes is the elapsed time from a code commit being pushed to that change running in production. One of the four DORA metrics, it captures how fast a team can move an idea, once written, through review, CI, testing and release: a direct proxy for the speed of the delivery pipeline.