The Datadog Software Catalog is a tool designed to centralize and streamline knowledge about an organization's software services, aiding in the transition from monolithic to microservices architectures. It consolidates information about service dependencies, ownership, and performance metrics, and is automatically populated with data from Datadog's APM customers, telemetry data, and other asset inventories like ServiceNow. This centralized repository enhances incident management, improves communication among engineers, and supports reliable code deployments by providing a clear view of service dependencies and performance. The catalog also facilitates collaboration by offering key information such as on-call schedules and service documentation, which allows for more efficient troubleshooting and operational management. It enables stakeholders across the organization to access critical data independently, aiding in communication during incidents and facilitating exercises like game days. The Software Catalog is part of Datadog's Internal Developer Portal product, with many features available for free to customers, and offers advanced capabilities for a more comprehensive understanding of service observability and operational practices.