Key performance indicators measure activity to determine whether a system is achieving it's defined objectives. Not all metrics are KPIs. KPIs should pass the IPA test – Important,Potential for improvement, andAuthority(does the system have the means to improve this KPI?). (TBD)
"This is is important because if you can’t get people in a large organiza- tion aligned on both what they are going to build and what approach they are going to use for prioritizing improvement, they are not very likely to deliver a DevOps implementation that will deliver the expected results."