Azure Cosmos DB vs Microsoft SQL Server

Azure Cosmos DB is a globally distributed, multi-model database service by Microsoft offering single-digit millisecond latency and 99.999% availability SLA. It supports document, key-value, graph, and column-family data models with multiple API options.

Microsoft SQL Server is enterprise relational database from Microsoft with deep integration into the Windows and Azure ecosystem. It provides comprehensive features for databases workflows. The tool is actively maintained with regular updates and strong community/vendor support.