Your question is System Architecture: WSDL, REST, SOA, Microservices. 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).
Discuss your experience designing and implementing systems using WSDL, REST, SOA, and microservices patterns, and how you choose between them for a given ACL Digital client.