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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

91 questions in Architecture Decision-Making.

  1. Architecture Decision-Making beginner

    When is an architectural decision worth an ADR, and what makes an ADR useful two years later?

    2 min answer adrdocumentationgovernance
  2. Architecture Decision-Making intermediate Multiple choice

    When should a service call another synchronously, and when should it publish an event instead? Give me the deciding test, not a preference.

    2 min answer syncasynccouplingavailability
  3. Architecture Decision-Making intermediate

    You are reviewing a design for an internal tool with 200 users. It proposes Kubernetes, microservices, Kafka, a service mesh and CQRS. How do you handle the review?

    2 min answer over-engineeringreviewpragmatismgovernance
  4. Decision Practice intermediate

    A large organisation wants consistent architectural decision practice across many teams. What should be standardised and what should not?

    2 min answer decision-practicestandardisationautonomygovernance
  5. Decision Practice advanced

    Three years of architectural decisions live in a wiki, in chat threads and in two shared documents. The team agrees to move decision records into the repository beside the code without a 300-page backfill. Give the sequence, and name the point of no return.

    3 min answer decision-recordsmigrationdocumentationgovernance
  6. Decision Practice intermediate

    You join a team with no decision records. Significant choices are made in chat and nobody can explain why the system is shaped as it is. How do you introduce ADRs without it becoming process overhead?

    2 min answer adrdocumentationpracticeadoption
  7. Deciding Under Uncertainty advanced

    A decision must be made now and the information needed will not be available for six months. What should the approach be?

    2 min answer postmanuncertaintyoptionsreversibility
  8. Deciding Under Uncertainty advanced

    A sponsor wants a date for a programme with several unknowns. Refusing to estimate is not an option. How do you handle it?

    1 min answer meta-skillsestimationuncertaintycommunication
  9. Deciding Under Uncertainty advanced

    An architectural decision must be made with genuinely insufficient information and the cost of delay is real. How should it be approached?

    2 min answer uncertaintyoptionsexperimentsreversibility
  10. Deciding Under Uncertainty advanced

    An architecture decision must be made when the workload, scale and requirements are genuinely unknown. What approach works?

    2 min answer uncertaintyoptionsreversibilitytriggers
  11. Delivery vs Maintainability intermediate

    A quick-commerce grocery operator running dark stores needs substitution handling for out-of-stock items. Option A is a rule table inside the existing order service: three weeks and it will need rework. Option B is a separate availability-and-substitution service with its own store: eleven weeks. The business does 45000 orders a day, cancels about 6% of them for stock reasons, expects the feature to recover roughly a third of those, and earns about 1.10 dollars of contribution per order. Roughly what is the cost of delay, and what rework budget does it justify?

    3 min answer cost-of-delaytechnical-debtsubstitutionsestimation
  12. Delivery vs Maintainability beginner Multiple choice

    A team has three weeks to launch and has agreed that exactly one corner will be cut. Four candidates are on the table. Which shortcut is the safe one to take?

    3 min answer technical-debtidentifiersdata-modelreversibility