OpenTelemetry is a unified framework for telemetry data collection that offers a comprehensive view of how requests and data move through complex services webs, making it easier to understand and diagnose system issues in distributed systems such as microservices and cloud-native architectures. By providing a standardized way to extract insights from tracing individual requests, aggregating logs and metrics, OpenTelemetry simplifies observability in modern software applications and makes monitoring, debugging, and optimizing performance across distributed systems more accessible. With its modular architecture consisting of an API, SDK, and Collector, OpenTelemetry offers a flexible and extensible approach to observability that can be tailored to the evolving needs of software architectures. The project has gained rapid growth adoption in the tech industry, with many companies using it to instrument their applications and collect telemetry data.