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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

4 questions in Lawful Basis & Purpose Limitation.

  1. Lawful Basis & Purpose Limitation beginner Multiple choice

    A European travel marketplace of Booking.com's shape holds the same guest email twice: once captured at checkout so the booking confirmation can be sent, once captured at newsletter sign-up. The data team wants a single golden customer record and cannot see the objection. Which data model keeps the merge lawful?

    3 min answer purpose-limitationgolden-recordmdmconsent
  2. Lawful Basis & Purpose Limitation advanced

    A recommendation model was trained on browsing histories collected under consent. Several thousand users withdraw that consent. What happens to the model that has already learned from their data, and what makes your answer defensible?

    3 min answer consent-withdrawaltraining-dataprovenanceretraining
  3. Lawful Basis & Purpose Limitation advanced

    Data was collected to fulfil bookings. A team wants to use it to train a recommendation model. What determines whether that is permitted, and how is it enforced?

    2 min answer purpose-limitationlawful-basisconsentenforcement
  4. Lawful Basis & Purpose Limitation advanced

    Review this. A lending platform declines applications using a model plus rules, and logs the decision outcome and the final score. Legal says the design satisfies the GDPR's Article 22 requirements on automated decision-making because a human can review any decline on request. What is wrong?

    3 min answer gdprarticle-22automated-decisionsexplainability