Same team. Scope through operation.
A BridgeOne partner stays on every engagement from the first conversation to the end of the operating phase. The people who promise the architecture are the people writing the code. No "delivery team you've never met" handover. No retainer-driven roadmap drift. Same names on the invoice, the standup, and the on-call rotation.
This is the load-bearing principle. Everything else on this page exists to support it.