Every sale should be a team sale. So if you have a customer success team (the team that actually delivers, sets up, and maintains whatever is sold to the customer), then it should sign off on every deal. Sales and customer success should be under one leader, in the same silo, being compensated in the same way. In this setup, sales can’t just throw a customer over the fence and never think about them again. If there’s no customer success team, then sales should work very closely with customer support, operations, or manufacturing—create a board of people to approve each commitment.