Brownfield vs Greenfield Migration

As of 2026-05-29

6-factor decision framework: technical debt density, consumer ecosystem maturity, data volume + history, change management capacity, TCO (licence + CU + delivery), AI/BDC strategic intent. Pure brownfield: inherits debt + bridge licence cost. Pure greenfield: 2× delivery risk + change management cost. Senior pattern: hybrid — greenfield for top quartile, bridge for middle, decommission for bottom. 5-year TCO model required before recommendation.