Goodbye to Microsoft Teams Free (Classic) and Hello to Microsoft Teams (Free)(windowscentral.com)
windowscentral.com
Goodbye to Microsoft Teams Free (Classic) and Hello to Microsoft Teams (Free)
https://www.windowscentral.com/software-apps/say-goodbye-to-microsoft-teams-free-classic-and-hello-to-microsoft-teams-free
But most companies don't use the free version, just the one that comes with M365.