Quiz

2988 questions of the kind that actually get asked — in interviews, in architecture review boards, and by the person who has to run the thing at 3 AM. Every answer states the trade-off rather than the slogan, and says when the obvious choice is the wrong one.

All areas2988 Architecture Fundamentals91 Distributed Systems111 Data Architecture100 Cloud Architecture97 Networking96 API & Integration Architecture97 Reliability & Resilience99 Observability92 Performance & Capacity Engineering100 Security Architecture105 Cost Architecture & FinOps102 Business Architecture103 Architecture Communication102 Enterprise Architecture100 Legacy Modernization102 AI-Era Architecture106 Software Architecture & Engineering93 Architecture Patterns94 Architecture Decision-Making101 The Architect's Meta-Skills102 Delivery & Release Engineering103 Platform Engineering & Developer Experience102 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data103 Data Governance & Semantics91 Frontend & Experience Architecture101 Edge, Mobile & IoT98 Regulatory & Data Protection Architecture99 Assurance, Audit & Model Risk98

Difficulty Any beginner intermediate advanced

5 questions in Unit Economics.

Quiz

A database vendor removes its free tier to control cost. How should a platform team model the true cost of serving many tiny tenants, and which architectural choices change the economics?

A delivery marketplace's infrastructure cost per order is falling while total cost rises. Is that good, and what should the unit metric actually be?

An AI inference platform's margin depends on GPU utilisation. Which levers actually change unit economics, and in what order?

An interviewer sets the exercise on a food-delivery platform of Zomato's kind - assume a flat delivery fee of $2.00 and a 70% gross-margin target on that fee. Work backwards to the infrastructure budget per order and then tell me what you would do with the number.