Migration Wave Planning

As of 2026-05-29

Migrate by business domain in dependency order, never by technical layer or finance-first. Canonical waves: pilot (low-risk, prove the chain) → core finance (max reconciliation, 2-close parallel run) → supply chain → HR (privacy-gated) → decommission. Dependency mapping (shared dimensions force adjacent waves) is the real planning work. Parallel-run is non-negotiable for finance and must be priced honestly. The defensible wave plan is the senior-rate deliverable.