Mike Cohn is a key popularizer of scrum and Agile practices, co-founder of the scrum-alliance (2002), founder of Mountain Goat Software, and author of the three most widely-read practitioner books on Scrum user stories, estimation, and adoption. His contribution to the Agile movement is primarily the codification and dissemination of Scrum practices in accessible, practitioner-oriented form.
Founding the Scrum Alliance
Cohn co-founded the scrum-alliance in 2002 with ken-schwaber and esther-derby. The Scrum Alliance created the Certified Scrum Master (CSM) certification, which became the engine of Scrum's mainstream adoption. The alliance's role in scrum-dominance-and-mainstream is substantial — the CSM certification, however controversial in the post-agile-era, made Scrum training a viable industry and brought Scrum practices to hundreds of thousands of practitioners. The scrum-alliance-founding-2002 was a pivotal institutional moment.
Mountain Goat Software
Cohn founded Mountain Goat Software as a training and consulting practice focused on Scrum and Agile adoption. Through Mountain Goat, he has trained practitioners, written extensively on his blog, and maintained a practitioner-facing presence in the Agile community independent of the Scrum Alliance.
Key Works
Movement Role
Cohn is the practitioner's guide to Scrum. Where Schwaber and Sutherland defined Scrum and built its institutional infrastructure, Cohn made it legible and teachable for the broad audience of developers, managers, and teams adopting the framework. His books are the most commonly cited practitioner references for core Scrum concepts. His role at the scrum-alliance placed him at the center of the certification system that propagated Scrum.
The three-book sequence — user stories, estimation, adoption — represents a comprehensive practitioner education in Scrum without requiring the official Scrum Guide. Cohn remained associated with the Agile community through the enterprise-scaling-era and post-agile-era, maintaining a practitioner voice distinct from the enterprise scaling debates.