Sensors are the workhorse of Endpoint Detection and Response (EDR) solutions. An endpoint sensor is a lightweight software component on devices that collects data and provides a firsthand account of what is taking place on the endpoint.
Sensors are primarily responsible for visibility, aggregating data from endpoints, taking response actions, and transmitting information back to analysts and investigators. In general, endpoint sensors provide on-device visibility that is crucial to threat detection and response.
Article Link: How to Choose the Right Endpoint Sensor