What is Yammer?
Yammer (now rebranded as Viva Engage) is Microsoft 365’s enterprise social network.
It helps employees connect, share knowledge, and build community across your organization.
In 2023, Microsoft began transitioning Yammer into Microsoft Viva Engage, keeping all Yammer features but rebranding it under the Microsoft Viva employee experience platform — with tighter integration into Teams and Outlook.