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Quiz

2667 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 areas2667 Architecture Fundamentals81 Distributed Systems101 Data Architecture90 Cloud Architecture87 Networking86 API & Integration Architecture78 Reliability & Resilience88 Observability81 Performance & Capacity Engineering90 Security Architecture95 Cost Architecture & FinOps92 Business Architecture93 Architecture Communication91 Enterprise Architecture91 Legacy Modernization92 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

30 questions in Legacy Modernization.

  1. Replatforming intermediate

    A marketplace replatforms a service from a self-managed database to a managed one. What benefits are real, what constraints appear, and what must be verified first?

    2 min answer replatformmanaged-servicesconstraintsmigration
  2. Replatforming intermediate

    A team replatforms a self-managed database onto a managed service in six weeks and the project lands on time. Eighteen months later they are running an unplanned major-version upgrade over a weekend because the provider's standard support for their engine version ends. What did the replatform actually trade away, and when does that bill arrive?

    3 min answer replatformmanaged servicesupgradesend of support
  3. The Six Rs intermediate

    A company must modernise a portfolio of applications. How should each be assigned a modernisation approach, and what is the most common misassignment?

    2 min answer udaansix-rsportfoliorehost
  4. The Six Rs intermediate

    A travel platform must move a portfolio of applications off ageing infrastructure. How should each application be assigned among rehost, replatform, refactor, rebuild, replace and retire?

    2 min answer six-rsportfoliomigration-strategyexpedia
  5. The Six Rs intermediate Multiple choice

    Of the six migration strategies, which is most often skipped and why does that matter?

    1 min answer six-rsretireportfoliorationalisation
  6. Zero-Downtime Migration intermediate Multiple choice

    A commerce platform must change a database schema while an older application version is still running. What migration pattern prevents downtime, and what is the common mistake?

    2 min answer myntraschema-migrationexpand-contractdeployment