Since the 1950s, business leaders have embraced a variety of management techniques designed to improve employee performance. Peter Drucker introduced Management by Objectives (MBOs), a process during which management and employees define and agree upon objectives and what they need to do to achieve them. In the early 1980s, S.M.A.R.T. goals and Key Performance Indicators (KPIs) became popular methods for organizations to set objectives. Then in 1999, John Doerr introduced Objectives – Key Results (OKRs) to Google, a model he first learned about at Intel, and revolutionized goal setting. Today, OKRs are a de facto standard for aligning company and individual goals.