Adapted from Carnegie Mellon's CMMI. The model tells you where you are. The four phases are how you move. Phase 3 — the Stress Test — is the gate between L2 and L3 that no one else can certify you through.
Phase 1 (Design) produces your L0→L1 gap score. Phase 2 (Demonstrate) drives L1→L2. Phase 3 (Stress Test) is the gate between L2 and L3 — the threshold no one else can certify you through. Phase 4 (Train) completes L3→L4 and makes us redundant.
Phase 1 — Design — delivers your complete six-dimension DSMM score in 8 weeks.