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2908 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 areas2908 Architecture Fundamentals91 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture87 Reliability & Resilience99 Observability92 Performance & Capacity Engineering100 Security Architecture95 Cost Architecture & FinOps102 Business Architecture103 Architecture Communication102 Enterprise Architecture100 Legacy Modernization92 AI-Era Architecture96 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

6 questions in Platform API Deprecation.

  1. Platform API Deprecation intermediate

    A platform must deprecate an API or capability that many teams depend on. How is this done without destroying trust or stalling indefinitely?

    2 min answer deprecationplatformmigrationtrust
  2. Platform API Deprecation intermediate

    A platform must remove a widely-used internal API. How should the deprecation be run?

    2 min answer deprecationmigrationtelemetrycommunication
  3. Platform API Deprecation intermediate

    An internal platform must remove a capability that several teams depend on. How should the deprecation be run?

    2 min answer verceldeprecationinternal-apimigration
  4. Platform API Deprecation advanced

    The platform is removing v1 of its config API. Telemetry showed 412 calling services at announcement; after six months of a funded migration 9 remain - 4 have no owner in the catalogue, 3 are monthly batch jobs that touch the API only on the first of the month, and 2 belong to a team that says it will not move this quarter. Removal was promised for the end of the quarter. Sequence the removal so you keep the date and stay reversible at every step.

    3 min answer deprecationbrownoutsunsetreversibility
  5. Platform API Deprecation intermediate

    You need to retire a platform API used by 60 services. Describe the plan.

    2 min answer deprecationmigrationplatform
  6. Platform API Deprecation advanced Multiple choice

    Your gateway samples 1% of platform API requests into traces and that trace data is the only usage record you have. One caller is a monthly batch job that makes 3 calls a month. Roughly what is the chance it appears at all in six months of this data and what does that number rule out?

    3 min answer deprecationsamplingtelemetryprobability