Skype feels like it has been around forever but “May 5 2025, is the day Skype will cease to exist as Microsoft retires it, pushing people to switch to their Teams offering. The death of Skype was a slow one, but one that has been coming for quite some time now.”
But there are some excellent alternatives. I’ve long been using Jitsi myself, and even if you don’t want to self-host it, you can use their cloud hosted version for free (with no 40 minute limit).