Main download page:

https://teams.microsoft.com/downloads/

Repository page:

https://packages.microsoft.com/repos/ms-teams/pool/main/t/teams/

Deb installation of latest version:

wget --trust-server-names "https://teams.microsoft.com/downloads/desktopurl?env=production&plat=linux&arch=x64&download=true&linuxArchiveType=deb"
sudo dpkg -i teams_*_amd64.deb