Overview#Objectives and Key Results (OKRs) are described by John Doerr in his book Measure What Matters as: "A management methodology that helps to ensure that the company focuses efforts on the same important issues throughout the organization"
He goes on to say:
"An OBJECTIVE, I explained, is simply WHAT is to be achieved, no more and no less. By definition, objectives are significant, concrete, action oriented, and (ideally) inspirational. When properly designed and deployed, they’re a vaccine against fuzzy thinking—and fuzzy execution. KEY RESULTS benchmark and monitor HOW we get to the objective. Effective KRs are specific and time-bound, aggressive yet realistic. Most of all, they are measurable and verifiable."
Objectives and Key Results is at least similar to Key Performance Indicators