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Quiz

2741 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 areas2741 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture78 Reliability & Resilience99 Observability92 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization92 AI-Era Architecture96 Software Architecture & Engineering84 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture102 Data Platform Architecture98 Streaming & Real-Time Data93 Data Governance & Semantics91 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk98
Difficulty Any beginner intermediate advanced

2741 questions.

  1. Cost Governance intermediate

    The cloud bill has doubled year on year while revenue grew 20%. The CFO wants a plan. What is your approach?

    1 min answer finopscostgovernancecloud
  2. Architecture Cost Modelling advanced

    A GPU platform must decide between holding warm capacity and accepting cold starts. How should the two be compared economically?

    2 min answer together-aimodalcold-startwarm-pool
  3. Architecture Cost Modelling advanced

    A video analysis pipeline splits streams into frames, analyses each, and aggregates. Built as serverless functions passing frames through object storage, it costs far more than expected. Diagnose.

    2 min answer amazonserverlesscostboundaries
  4. Architecture Cost Modelling intermediate

    An architecture review must estimate the cost of a proposed design before it is built. What should the model contain, and what makes such estimates useless?

    2 min answer cost-modellingarchitecture-reviewestimationdrivers
  5. Architecture Cost Modelling beginner

    Every feature branch gets its own environment - one small always-on service, a managed NAT gateway, a load balancer and a small managed database. Roughly what does one idle environment cost per month at 2026 cloud list prices, and what does that imply for 60 open branches?

    2 min answer environmentsnat-gatewayfixed-costbeginner
  6. Architecture Cost Modelling advanced

    On 8 August 2024 Hugging Face announced it had acquired XetHub, a 14-person storage startup, describing it as its largest acquisition to that date. Continuing on Git LFS, or building content-defined chunking in-house, were the alternatives. What cost model separates the three, and where would copying this be a mistake?

    3 min answer build vs buydeduplicationstorage economicsacquisition
  7. Architecture Cost Modelling intermediate

    The cloud bill doubled over three months with no traffic growth. Where do you look?

    2 min answer finopsdiagnosiscost
  8. Cost per Request intermediate

    A communications platform of the kind Twilio operates bills its customers per message. Most of what it pays per message goes to carriers rather than to its own servers. The team commits to halving infrastructure cost per message this year. What does that buy, and what does it give up?

    3 min answer unit economicscost of goods soldroutingmargin
  9. Cost per Request intermediate Multiple choice

    A marketplace's infrastructure spend rises with growth. How should it distinguish healthy growth from deteriorating efficiency?

    2 min answer meeshounit-economicscostefficiency
  10. Cost per Request advanced

    An inference platform's cost per request varies by two orders of magnitude between requests. What does that imply for pricing, capacity and engineering priorities?

    2 min answer cost-per-requestvariancepricingbatching
  11. Cost per Request advanced

    How do you build a cost-per-request model for a proposed architecture before writing code, and which cost terms are most often omitted?

    2 min answer prime-videocost-modellingunit-economicsdesign-review
  12. Cost per Request intermediate Multiple choice

    Your infrastructure bill rose 40% this quarter. What do you need to know before deciding whether that is a problem?

    2 min answer unit-economicscostefficiencymetrics