https://www.vice.com/en_us/article/a3xpma/how-to-remove-zoom-from-your-mac

If you have an office job, chances are you get invited to a lot of meetings. In 2019, that means jostling to book a meeting room days in advance, or trying to figure out where the hell you put that link to the video conference.

The popular video conference app maker Zoom had a clever solution for that scenario, which made video conferencing a bit faster: it installed a server on your Mac that remained there even if you uninstalled the Zoom app, turning on your camera as soon as you joined a meeting. In practice, there were two Zoom apps, the video conferencing one, and the app that install the server.