Your question is Product Recommendation System Design. 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).
You are building recommendations for a product catalog on an e-commerce platform. The system should surface relevant items on the home page, category pages, and product detail pages so shoppers see products they are likely to click and buy.
How would you approach building a recommendation system for our products?