When CMMI is done well, the organization hums. This presentation describes what it is like to live in a medium-sized complex engineering organization appraised at ML (Maturity Level) 3. Topics covered The essence of CMMI ML 2 and 3 What does practice implementation look like? Authentic use vs. compliance: how does the organization own the practices? Typical life cycles used: does it matter? Waterfall, Agile/Scrum: how they fit Quality practices and finding defects early Collecting, organizing and using best practices & lessons learned.