Azure Cosmos DB vs PostgreSQL

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.

PostgreSQL is Open-source relational database known for extensibility, SQL compliance, and a rich ecosystem of extensions.. It is available under a free model. This tool falls under the databases category.