1. Platform Teams intermediate Multiple choice

    A platform team of 9 serving 300 engineers changes model. It stops publishing modules and libraries that teams run themselves and starts operating the runtime: it owns the clusters, the pipelines and the base images, and it holds the pager for them. Within two quarters the share of services on the supported path goes from 60% to 95% and a runtime upgrade that used to take three quarters takes five weeks. What has the organisation given up?

    3 min answer platform-teamsteam-topologieson-callcognitive-load
  2. Platform Teams intermediate

    When should an organisation create a platform team, and what distinguishes one from a service desk?

    2 min answer platformself-servicecognitive-loadbottleneck
  3. Platform Telemetry intermediate

    A platform team cannot tell which of its capabilities are used, by whom, or whether they are working. What telemetry does a platform need about itself?

    2 min answer druvaplatform-telemetryusageadoption
  4. Platform Telemetry intermediate

    What should a platform team measure about its own platform, and what is most often missing?

    1 min answer platform-telemetryadoptionexperienceslos
  5. Policy as Code intermediate

    An enterprise wants automated policy enforcement. Where should policies be evaluated, and what makes the approach fail?

    1 min answer policy-as-codeenforcementfeedbackexceptions
  6. Polyglot Persistence intermediate

    A developer platform accumulates a relational database, an object store, a search index, a cache, a queue and a time-series store. When is this justified polyglot persistence, and when is it accidental sprawl?

    2 min answer polyglot-persistenceoperational-costconsolidationgitlab
  7. Polyglot Persistence intermediate

    A team wants to add a graph database for a "people you may know" feature. The system currently runs on one PostgreSQL instance. Evaluate.

    2 min answer polyglotgraphoperationsnetflix
  8. Portfolio Prioritisation intermediate

    An architecture team has more improvement proposals than capacity. How should they be prioritised?

    2 min answer prioritisationriskleveragesequencing
  9. Portfolio Prioritisation intermediate

    An organisation has forty proposed initiatives and capacity for eight. What framework produces a defensible portfolio, and what does it need to avoid?

    2 min answer myntraprioritisationportfoliosequencing
  10. Portfolio Prioritisation intermediate Multiple choice

    Three funded initiatives each need about six weeks of work from the same two-person identity team, which also absorbs roughly 30% of its time in unplanned support. All three sponsors want to start now and the plan shows all three starting now. Which rule should decide the sequence?

    3 min answer prioritisationconstraintscost of delaywip
  11. Postmortems intermediate

    A platform publishes detailed public postmortems for significant incidents. What does this practice cost, and what does it buy that internal postmortems do not?

    2 min answer postmortemstransparencylearningtrust
  12. Postmortems intermediate

    An engineer ran a command that deleted production data. What does the postmortem investigate?

    2 min answer postmortemblamelesssystemicgoogle