What 90+ Practitioners Taught Us About Credentials and Capability Originally published September 2009. Updated January 2026. This post turned into one of the most active discussions in LeanBlog history. More than 90 practitioners, leaders, recruiters, consultants, and educators weighed in on a simple but loaded question: Is Lean certification actually valuable — or is it mostly a checkbox for HR? What’s the buzz? After rereading the comments years later, one conclusion still stands out: Certification … Continue reading Is Lean Certification Worth It?