Welcome to your interview.
The question is on your right: Payment Processing and Fintech Knowledge. 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.
What do you know about payment processing, merchant acquiring, and fintech software as it relates to Fiserv?