OpenTelemetry (OTel) is a comprehensive open-source framework designed for collecting, processing, and exporting telemetry data such as logs, metrics, and traces across various applications and infrastructure, particularly in cloud-native and microservices environments. It addresses the challenges traditional observability tools face by providing end-to-end visibility and reducing noise in distributed systems. OTel's key features include unified telemetry collection, vendor neutrality, broad language support, and integration with cloud-native technologies like Kubernetes. Despite its benefits, OTel can generate noisy data and requires optimized tools to enhance efficiency and functionality. Organizations are encouraged to select observability tools that extend OTel's capabilities, ensuring efficient data processing, easy deployment, and avoidance of vendor lock-in. As a CNCF project, OTel is continuously evolving, and active ecosystem participation is crucial for staying aligned with the latest standards.