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Quiz

2627 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 areas2627 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture77 Networking86 API & Integration Architecture78 Reliability & Resilience88 Observability81 Performance & Capacity Engineering90 Security Architecture85 Cost Architecture & FinOps82 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization82 AI-Era Architecture86 Software Architecture & Engineering84 Architecture Patterns84 Architecture Decision-Making91 The Architect's Meta-Skills92 Delivery & Release Engineering93 Platform Engineering & Developer Experience92 Testing & Quality Architecture90 Data Platform Architecture88 Streaming & Real-Time Data93 Data Governance & Semantics81 Frontend & Experience Architecture91 Edge, Mobile & IoT88 Regulatory & Data Protection Architecture90 Assurance, Audit & Model Risk88
Difficulty Any beginner intermediate advanced

51 questions in API & Integration.

  1. API Versioning advanced

    An enterprise platform supports many years of API versions simultaneously because customers integrate deeply and upgrade slowly. What does that policy cost, and what would you do differently?

    2 min answer versioningdeprecationbackward-compatibilityenterprise
  2. API Versioning advanced

    You are designing a public payments API. Consumers are numerous, unknown and unmotivated to migrate. How do you handle breaking changes?

    2 min answer stripeapi-designversioningcompatibility
  3. Partner & B2B Integration advanced

    A grocery platform integrates with retail partners whose inventory data varies in freshness, completeness and reliability. How should the integration be designed so one partner's bad data does not degrade the whole platform?

    2 min answer b2bdata-qualityisolationfeeds
  4. Partner & B2B Integration advanced

    An enterprise integration platform connects to many customer identity systems with different reliability and behaviour. How should directory sync, SSO and webhook processing be isolated?

    2 min answer workosssoscimisolation
  5. Partner & B2B Integration advanced

    You must make a breaking change to an API used by 5000 partner organisations. What is your plan?

    3 min answer b2bversioningdeprecationpartners
  6. Backward Compatibility advanced

    Salesforce scheduled the retirement of Platform API versions 21.0 through 30.0 for the Summer '23 release and later postponed it to Summer '25, having retired versions 7.0 through 20.0 in Summer '22. After retirement, REST calls on a retired version return 410 Gone. What does a postponement of that size tell you about deprecation as a mechanism, and what would you build so that yours does not slip?

    3 min answer salesforcedeprecationapi versioningsunset
  7. Contract Testing advanced Multiple choice

    A platform with many services finds that integration tests are slow and flaky, yet removing them causes breakages between services. What testing approach resolves this, and what does it require organisationally?

    2 min answer contract-testingconsumer-drivenintegration-testsci
  8. Contract Testing advanced

    An organisation with hundreds of services finds integration bugs in production despite extensive testing. How do consumer-driven contract tests fit, and what do they not solve?

    3 min answer contract-testingpactintegrationci
  9. Contract Testing advanced

    Integration failures between 30 services are found in a shared staging environment, days after merge. Propose a change.

    2 min answer contract-testingciintegrationorganisation
  10. API Error Handling advanced

    A shipping aggregator integrates dozens of carriers whose APIs report failures inconsistently - some with HTTP codes, some with 200 and an error body, some with a timeout that means success. How should errors be modelled?

    2 min answer shiprocketerrorsnormalisationambiguity
  11. Event-Driven Integration advanced

    An e-commerce platform integrates order, inventory, payment, logistics and notification through events. Which events should be commands and which should be notifications, and why does confusing them cause outages?

    2 min answer event-drivencommandsnotificationscoupling
  12. Event-Driven Integration advanced

    An event-collection platform routes customer telemetry to hundreds of downstream destinations with different reliability. What delivery guarantees are achievable, and how should destination failures be isolated?

    2 min answer segmentdeliveryisolationdlq