Q3 Cosmos DB Domain 2 · 25–30% of exam

Which Cosmos DB consistency level provides the strongest guarantee, always reading the latest committed write?

  1. A Session
  2. B Bounded staleness
  3. C Strong (correct answer)
  4. D Consistent prefix

Shortcut: Strong consistency guarantees linearizability — every read returns the most recent committed write globally. It comes at a latency cost and is only available in single-region or multi-region with a single write region.