Azure Cosmos DB for PostgreSQL is a fully managed relational database service that provides remote query execution, support for JSON-B, geospatial data, rich indexing, and high-performance scale-out capabilities. It enables users to build applications on single- or multi-node clusters. The service can be monitored using Datadog's out-of-the-box dashboard, which provides key metrics such as reserved memory utilization, CPU utilization, IOPS, and storage usage. Automated monitors can also be set up to track the health and performance of databases, with alert notifications sent when issues are detected. Additionally, logs from Azure Cosmos DB for PostgreSQL can be collected and visualized using Datadog's embedded Azure integration, providing full visibility into the database stack.