Developing with Azure Cosmos DB Table API and Azure Table storage


Azure Cosmos DB Table API and Azure Table storage share the same table data model and expose the same create, delete, update, and query operations through their SDKs.


The serverless capacity mode is now available on Azure Cosmos DB's Table API.

If you currently use Azure Table Storage, you gain the following benefits by moving to the Azure Cosmos DB Table API:

Feature Azure Table storage Azure Cosmos DB Table API
Latency Fast, but no upper bounds on latency. Single-digit millisecond latency for reads and writes, backed with <10-ms latency reads and <15-ms latency writes at the 99th percentile, at any scale, anywhere in the world.
Throughput Variable throughput model. Tables have a scalability limit of 20,000 operations/s. Highly scalable with dedicated reserved throughput per table that's backed by SLAs. Accounts have no upper limit on throughput and support >10 million operations/s per table (in provisioned throughput mode).
Global distribution Single region with one optional readable secondary read region for high availability which supports automatic and manual account failover. Turnkey global distribution from one to 30+ regions. Support for automatic and manual failovers at any time, anywhere in the world.
Indexing Only primary index on PartitionKey and RowKey. No secondary indexes. Automatic and complete indexing on all properties, no index management.
Query Query execution uses index for primary key, and scans otherwise. Queries can take advantage of automatic indexing on properties for fast query times.
Consistency Strong within primary region. Eventual within secondary region. Five well-defined consistency levels to trade off availability, latency, throughput, and consistency based on your application needs.
Pricing Consumption-based. Available in both consumption-based and provisioned capacity modes.
SLAs 99.99% availability. 99.99% availability SLA for all single region accounts and all multi-region accounts with relaxed consistency, and 99.999% read availability on all multi-region database accounts Industry-leading comprehensive SLAs on general availability.

Azure SDKs

Current release

The following SDK packages work with both the Azure Cosmos Table API and Azure Table storage.

Prior releases

The following SDK packages work only with Azure Cosmos DB Table API.