Telegraf is a plugin-driven agent for collecting, processing, aggregating, and writing metrics and events. It has over 300 plugins ready to use, allowing users to collect metrics from various sources such as applications, cloud services, containers, hardware, IoT devices, and more. Once processed, the collected data can be sent to different data stores, services, and message queues. Telegraf is available for download on a wide range of operating systems and architectures, making it easy to deploy everywhere.