Your question is Measure Implementation Success. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You have just led a customer implementation for an enterprise software product. The customer is live, stakeholders want to know whether the rollout is actually succeeding, and you need a way to separate early adoption signals from longer-term business outcomes.
How do you measure the success of a customer implementation?