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SLA for Azure Cosmos DB

Last updated: September 2018

Azure Cosmos DB is Microsoft’s globally distributed multi-model database service. It offers turnkey global distribution across any number of Azure regions by transparently scaling and replicating your data wherever your users are. The service offers comprehensive 99.99% SLAs which covers the guarantees for throughput, consistency, availability and latency for the 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 Levels. Azure Cosmos DB allows configuring multiple Azure regions as writable endpoints for a Database Account. In this configuration, Cosmos DB offers 99.999% SLA for both read and write availability.

Version History

1.2 Last updated: September 2018
Release notes: Improved write SLA when multiple Azure regions are configured as writable endpoints. Addition of 10ms write latency for Network Optimized Applications.

1.1 Last updated: November 2017
Release notes: Azure Cosmos DB now supports a new configuration: Database accounts spanning multiple regions with Strong Consistency, this configuration has a consistency, throughput and read availability SLA. SLA for existing configurations (Cosmos DB Database Accounts scoped to a single region configured with any of the five Consistency Levels or Database Accounts spanning multiple regions, configured with any of the four relaxed Consistency Levels) remains the same. Clarified Consistency Guarantees table with industry standardized term.

1.0 Last updated: May 2017
Release notes: Service rebranded to Azure Cosmos DB.