A channel‑owned experiment engine tends to optimize for the channel’s view of reality. A channel‑neutral engine starts from business questions, does this drive incremental effect and what happens to retention and payback. Building blocks: - A shared backlog of hypotheses across the chain, messaging to onboarding to reactivation - Standardized test formats, geo tests, holdouts, incrementality setups - Clear rules for what can change during test periods - An owner with mandate to say “now we test” and keep other changes out When this exists, the need for constant ad hoc communication falls because answers are produced with a method everyone accepts.