In this guide, we learn how to set up Datadog to automatically collect key metrics from Amazon RDS PostgreSQL instances and provide more meaningful insights into their performance over time. We cover two main steps: accessing CloudWatch metrics with Datadog's Amazon RDS integration and querying metrics directly from the database instance using the PostgreSQL integration. Additionally, we explore how to enhance visibility by setting up RDS enhanced metrics with Datadog and deploying distributed tracing and APM to monitor applications that rely on RDS PostgreSQL.