It just lives in kernel modules or as a OS config and they do not tell you as an employee, and it's done for 'compliance' or 'security' reasons so it's not obvious what it is when you look at a list of processes on your computer in the task manager.
Some popular ones in the bay area for macOS at startups are crowdstrike, carbon black, jamf, openvpn, umbrella, crashplan, munki, etc. Not mention the OS management configuration stuff like MDM profiles for macOS and active directory configurations for windows. A lot of brand name corps you might think are 'good guys' use this, like lyft or dropbox. Similarly with companies FANG, where it might custom software.