Question
What are the 5 Rs of cloud migration?
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Answer
Rehost (lift-and-shift), Refactor (minor changes), Rearchitect (significant redesign), Rebuild (rewrite), Replace (SaaS adoption).
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All Patterns & Migration Flashcards
Q: What are the 5 Rs of cloud migration?
A: Rehost (lift-and-shift), Refactor (minor changes), Rearchitect (significant redesign), Rebuild (rewrite), Replace (SaaS adoption).
Q: When should you use the CQRS pattern?
A: When read and write workloads have different performance requirements. Separate read models (optimized queries) from write models (optimized transactions).
Q: What is the circuit breaker pattern?
A: Prevents cascading failures by detecting failures in a downstream service and failing fast without attempting the call. States: closed, open, half-open.
Q: When to use Event Grid vs Service Bus vs Event Hubs?
A: Event Grid: reactive event routing (pub/sub). Service Bus: reliable enterprise messaging (queues/topics). Event Hubs: high-throughput streaming ingestion (millions/sec).
Q: What is Azure Migrate used for?
A: Discovery, assessment, and migration of on-premises servers, databases, and applications to Azure. Provides sizing recommendations and cost estimates.