Welcome to your interview.
The question is on your right: Hybrid Cloud Billing Migration Risks. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
A telecom client wants to migrate their legacy on-premise billing system to a hybrid cloud model. What key architectural and operational risks do you foresee, and how would you mitigate them?