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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 Anti-Corruption Layer.

  1. Anti-Corruption Layer intermediate

    A card platform integrates with a network whose data model and semantics differ fundamentally from its own. Where should the translation live and what discipline does it require?

    2 min answer marqetaanti-corruption-layerintegrationmodel
  2. Anti-Corruption Layer intermediate

    A new service must integrate with a legacy system whose data model is entangled and poorly named. What does an anti-corruption layer actually do, and how do you know it is working?

    2 min answer anti-corruption-layerdddlegacyintegration
  3. Anti-Corruption Layer intermediate

    A platform integrates retailer systems with inconsistent models. What does an anti-corruption layer prevent, and where does it belong?

    2 min answer anti-corruption-layertranslationmodelspartners
  4. Anti-Corruption Layer advanced Multiple choice

    A procurement platform's anti-corruption layer maps a vendor's supplier codes to internal supplier ids and caches the mapping indefinitely because the codes never change. At 09:14 new purchase orders start appearing under a supplier that was deactivated 14 months ago - with that supplier's name, bank details and contract terms. The payload validates, nothing errors, and the vendor reports no incident. Which design decision made this possible?

    3 min answer anti-corruption-layeridentityintegrationsilent-failure
  5. Anti-Corruption Layer intermediate Multiple choice

    A team integrates a vendor CRM whose customer model contradicts theirs. Six months later vendor field names and status codes appear throughout the codebase. What was missing and what is the fix now?

    2 min answer acldddintegrationlegacy