There's one limitation, though. Android and PC users can't start a FaceTime call on their own. They'll need an Apple user to ...

No special software needed. Whether you have an Android phone or a Windows PC, Apple made it so you can join FaceTime calls with iPhone owners.

This effectively makes ‌‌FaceTime‌‌ a platform-agnostic video service, although you do need to be an iOS or Mac user to start the ‌‌FaceTime‌‌ call and send the link.