The article announces that Datadog has expanded its capabilities to include application performance monitoring (APM), which is now available to all Datadog customers. This new feature aims to provide full-stack observability for modern applications, allowing users to understand the execution of their code and how it's affected by underlying infrastructure. Datadog APM includes distributed tracing, detailed performance overviews, latency distributions, and percentiles, as well as integrations with common web frameworks, data stores, and other infrastructure components. The feature is designed to be infrastructure-aware, deployable in minutes, endlessly customizable, comprehensive, and an integral part of the Datadog platform, offering long data retention, built-in collaboration tools, and more.