Interview prompt
Problem context
A three-year platform modernization claims faster delivery, higher reliability, lower cost, and better developer experience. Hundreds of services have migrated, but spend rose and teams dispute whether business outcomes improved. Design measurement and governance for the next initiative.
Skills being evaluated
architecture outcomescausal reasoningportfolio governanceexecutive communication
The full reasoning guide is part of Pro
The scenario and evaluation focus above remain public. Pro unlocks the structured answer, trade-off analysis, follow-up probes, common weak answers, rubric, related reasoning, and any architecture diagram.
Sign in to continueWhat the full guide covers
Clarify the decision
Establish scale assumptions
Functional and non-functional requirements
High-level architecture
Data model and flow
Consistency and transaction boundaries
Failure modes and recovery
Security and privacy
Observability and SLOs
Capacity and cost
Alternatives and trade-offs
Evolution and migration
What Staff and Principal candidates should emphasize