Azure Database for PostgreSQL is a fully managed relational database service built on the powerful PostgreSQL engine, designed for demanding applications requiring advanced features and reliability. The service provides automatic backups with 35-day retention and point-in-time restore, built-in high availability with zone-redundant deployment options, and read replicas for scaling read-heavy workloads. PostgreSQL on Azure offers advanced SQL features, JSON data types, full-text search, PostGIS for geospatial data, and PL/pgSQL for stored procedures.