CrowdStrike Falcon is XDR product, there is hundreds of similar products available.

The role of XDR is to detect and block if some bad actor is trying to do something malicious in the machine. Old school virus signature detection is not enough anymore, you need pattern detection from network communication/DNS queries etc.

When corporation has thousands of devices to monitor the OS each of those devices Is not relevant. You need to detect if some random user logs to some Linux info display thousand kilometers away, and starts scanning the network.

Because the detection and response, needs to happen near realtime, for example Incase of cryptolockers, where all devices are encrypted within seconds, the software blocking this needs kernel level access.

I work in critical infrastructure as IT, but luckily we did not use falcon