https://www.techradar.com/news/steam-is-finally-getting-integrated-voice-chat

PC gamers using the Steam client have typically had to turn to third-party programs such as Discord or Teamspeak to power in-game voice chat, but it looks like Valve is finally getting around to integrating the much-desired feature with the introduction of a new Steam Chat service.

Available now in the Steam client beta, Steam Chat offers the ability to chat with other users on Steam with either group or individual messaging – via both text and voice – as well offering a host of improvements to the client’s friends list.