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AZ-305 · Question #161

You are designing an Azure Cosmos DB solution that will host multiple writable replicas in multiple Azure regions. You need to recommend the strongest database consistency level for the design. The so

The correct answer is A. bounded staleness. Each level provides availability and performance tradeoffs. The following image shows the different consistency levels as a spectrum. Note: The service offers comprehensive 99.99% SLAs which covers the guarantees for throughput, consistency, availability and latency for the Azure

Submitted by lukas.cz· Mar 6, 2026Design data storage solutions

Question

You are designing an Azure Cosmos DB solution that will host multiple writable replicas in multiple Azure regions. You need to recommend the strongest database consistency level for the design. The solution must meet the following requirements: - Provide a latency-based Service Level Agreement (SLA) for writes. - Support multiple regions. Which consistency level should you recommend?

Exhibit

AZ-305 question #161 exhibit

Options

  • Abounded staleness
  • Bstrong
  • Csession
  • Dconsistent prefix

How the community answered

(40 responses)
  • A
    65% (26)
  • B
    18% (7)
  • C
    13% (5)
  • D
    5% (2)

Explanation

Each level provides availability and performance tradeoffs. The following image shows the different consistency levels as a spectrum. Note: The service offers comprehensive 99.99% SLAs which covers the guarantees for throughput, consistency, availability and latency for the Azure Cosmos DB Database Accounts scoped to a single Azure region configured with any of the five Consistency Levels or Database Accounts spanning multiple Azure regions, configured with any of the four relaxed Consistency https://azure.microsoft.com/en-us/support/legal/sla/cosmos-db/v1_3/ https://docs.microsoft.com/en-us/azure/cosmos-db/consistency-levels#consistency-levels-and-

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