Your question is Choosing Cloud Service Models. 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).
What are the key differences between various cloud service models, and how do you decide which one is appropriate for a specific banking application?
Explain the shared-responsibility boundary for IaaS, PaaS, and SaaS. Address data classification, regulatory obligations, identity, encryption, resilience, vendor risk, and operational ownership. Give a practical recommendation method without assuming a particular application or cloud provider.