Datadog Data Streams Monitoring (DSM) is an advanced tool that helps optimize event-driven applications using streaming data pipelines such as Kafka or RabbitMQ. DSM provides end-to-end visibility from data ingestion to processing and output, enabling users to detect issues quickly, scale flexibly, analyze complex events, and troubleshoot problems in real-time. The integration of DSM with Application Performance Monitoring (APM) allows for a high-level overview of streaming data dependencies, investigation without workflow disruption, and identification of performance issues such as blocked messages, offline consumers, and high-latency queues. This integration helps users quickly pinpoint the root cause of performance issues and improve application performance.