Azure Cosmos DB is a fully managed, distributed NoSQL and relational database for modern app development. Get single-digit millisecond response times and up to 99.999-percent availability, backed by SLAs. Build cloud-native apps quickly and easily using your preferred tools with support for open-source PostgreSQL, MongoDB and Apache Cassandra. Enjoy automatic and instant scalability, and fast writes and reads anywhere in the world with turnkey data replication and multi-region writes. Gain insight over real-time data with no-ETL analytics using Azure Synapse Link for Azure Cosmos DB.