Nothing is delivered that has not been checked by someone other than the person who built it. Plans get made before the work starts, and revised out loud when they need to be. Problems are raised early rather than managed quietly.
The same team stays on a piece of work from the first meeting to the last. Scope creep is handled by talking about it, not by absorbing it silently. We take on what we can finish, which sometimes means turning work away. The people who scope the work are the people who deliver it.