This is just a whitelabeled Jitsi deployment. They might've added some extra features, but you can get the same at https://meet.jit.si/. If you want to run your own server, you can deploy the software pretty easily (docs at https://jitsi.github.io/handbook/docs/devops-guide/devops-gu...).
I set up a Jitsi deployment for my company in mid 2020 when everyone went online, and it's served us quite faithfully.