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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 Platform APIs.

  1. Platform APIs intermediate

    A platform exposes APIs to internal teams. How should these differ from APIs exposed to external customers?

    2 min answer platform-apiinternalversioningcoupling
  2. Platform APIs beginner

    A platform team argues that their internal API needs no versioning because every caller is inside the company and can be found with a code search. What is wrong with that reasoning?

    2 min answer internal apiversioningcouplingdeployment
  3. Platform APIs advanced

    An interviewer gives you this. "Our platform takes a short YAML file per service and a controller reconciles it into real infrastructure. 300 services use it. Product wants to change the default CPU request for the services that never set one. Walk me through how you would ship that."

    3 min answer platform apisdefaultsreconciliationblast radius
  4. Platform APIs intermediate Multiple choice

    Product teams need a Kafka topic and an object-storage bucket per service with quotas and retention that change over time. Should the platform expose a synchronous provisioning call that returns when the resource exists or a declarative resource reconciled by a controller or a pull request into a shared Terraform repository?

    3 min answer platform apideclarativereconciliationprovisioning
  5. Platform APIs intermediate

    The Hugging Face Hub stored large model and dataset files with Git LFS which versions whole files - appending 1 MB to a 5 GB file re-uploads 5 GB. In 2025 the Hub began moving repositories onto Xet storage which splits content into roughly 64 KB content-defined chunks aggregated into roughly 64 MB blocks so only changed chunks travel. The API developers call did not change. What forced the change and what had to stay stable and where would copying it be a mistake?

    3 min answer hugging facededuplicationstorageplatform api