In almost every S/4HANA program that struggles, there is a moment — often months into execution — when someone says: “We should have known this earlier.”
That sentence is the cost of skipping Phase 0. Assumptions about migration paths, custom code value, and data quality go unchallenged. Then they surface mid-delivery, when changing course is politically difficult and contractually expensive.
“Phase 0 is not about producing artefacts. It is about producing certainty.”
Clients who invest in a proper Phase 0 see approximately 40% faster implementation and 30% lower costs than those who start execution without one. That is not a coincidence — it reflects where program risk actually lives: before go-live, not during it.