Your question is Build an E-commerce Platform. 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).
Design an e-commerce platform which allows users to: Browse products, Add products to a shopping cart, Update or remove items from the cart. Proceed to checkout and place an order
Asked in the Round 2: System Design stage. Cover HLD and LLD, including entities, relationships, classes, methods, data structures, edge cases, major components, and data flow from browsing to checkout. Reported follow-ups: Identify entities and define relationships; design classes, methods, and data structures.