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2948 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 areas2948 Architecture Fundamentals91 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking96 API & Integration Architecture87 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 Business KPIs.

  1. Business KPIs intermediate

    A marketplace launches in a new city. Supply and demand are both near zero. What architectural support does this need?

    2 min answer marketplacecold-startconfigurationexperimentation
  2. Business KPIs intermediate

    A quick-commerce platform gives its automated dispatch system a single target - the share of orders delivered within 30 minutes - reported weekly to the executive team. Over two quarters that share rises from 82% to 94% and the programme is declared a success. In the same period orders per rider-hour falls 7%, platform-initiated cancellations rise from 0.4% to 2.1% and revenue per active customer falls. What happened and which design decision made it possible?

    3 min answer business-kpisgoodharts-lawguardrailsoptimisation
  3. Business KPIs intermediate

    A streaming platform's engineering team optimises for latency and availability while the business measures watch time and creator retention. How should these connect?

    2 min answer kpissloalignmentmeasurement
  4. Business KPIs intermediate Multiple choice

    An architecture group wants one metric on the company's executive dashboard, next to revenue and churn. Which one earns its place?

    2 min answer kpisexecutivesunit economicsmeasurement