Azure Cosmos DB
YugaByte DB’s multi-model, multi-API and tunable read latency approach is similar to that of Azure Cosmos DB. However, it’s underlying storage and replication architecture is much more resilient than that of Cosmos DB. Support for distributed ACID transactions and global consistency across multi-region and multi-cloud deployments makes it much more suitable for enterprises building distributed OLTP apps and hesitant to getting locked into proprietary databases such as Cosmos DB.
A post on our blog titled Practical Tradeoffs in Google Cloud Spanner, Azure Cosmos DB and YugaByte DB goes through some of above topics in more detail.