From a DevOps perspective, speed is often the indicator that you're doing things right. If you integrate code quickly and often, if you deploy quickly and often, if you patch and upgrade software quickly and often, if you detect, diagnose and fix issues quickly and often, those are all indicators of a high-performing team. Quality isn't always correlated, but high-performing teams tend to care about quality, so it's not uncommon to add quality improvements to the list if you're doing everything else.