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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

6 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
  5. Business KPIs advanced

    How would you justify a six-week reliability investment to a commercial stakeholder?

    2 min answer business-casekpiscommunicationoutcomes
  6. Business KPIs advanced

    Instacart's 2023 S-1 reported 2022 revenue of $2,551M, split $1,811M transaction and $740M advertising and other. You are the architect for the ad-serving path inside the shopping app. The interviewer asks which business KPI your next six months of work moves, and how you would prove it moved. Talk me through your answer.

    3 min answer instacartkpisattributionadvertising