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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 Trade-off Fundamentals.

  1. Trade-off Fundamentals beginner Multiple choice

    A B2B product has 30 enterprise customers. The API target of p99 under 300 ms has been met every month for a year and availability sits at 99.95%. In the last four renewal calls three customers raised the same complaint: a reported bug takes three weeks to reach production. You have one engineer-quarter. Where does it go?

    2 min answer tradeoffslead timesloprioritisation
  2. Trade-off Fundamentals advanced

    A file-sync company moves the bulk of its storage from a public cloud onto its own infrastructure. What was gained, what was sacrificed, and under what conditions would this trade-off be wrong for a different company?

    2 min answer tradeoffscostinfrastructuredropbox
  3. Trade-off Fundamentals intermediate

    A user-generated storytelling platform is 98% reads with an extremely skewed popularity distribution. The team debates caching, read replicas and denormalisation. How should the trade-off be framed?

    2 min answer tradeoffspratilipiread-heavyskew
  4. Trade-off Fundamentals intermediate

    An architecture review proposes multi-region active-active, event sourcing, CQRS and a service mesh for an internal tool with 500 users. Write the simpler architecture, and state the specific facts that would justify each rejected pattern later.

    2 min answer over-engineeringyagnireversibilitydrivers
  5. Trade-off Fundamentals advanced Multiple choice

    An organisation decomposed into thousands of microservices during hypergrowth and later consolidated into coarser domain groupings. Was the original decision wrong?

    2 min answer tradeoffsmicroservicesuberevolution