About Microsoft Viva Engage
The social fabric of Microsoft 365, with a leadership corner on top.
Viva Engage is the enterprise social network that lives inside Microsoft 365 and Microsoft Teams, built on what used to be Yammer. Yammer started in 2008 as a side product at the genealogy site Geni and grew into a standalone enterprise social network under founder David Sacks. Microsoft acquired Yammer in 2012 and folded it into Office 365. In August 2022 the Communities app inside Teams was renamed to Viva Engage as part of the Microsoft Viva employee experience platform, and on 13 February 2023 Microsoft announced the full rebrand from Yammer to Viva Engage, with the Yammer apps and yammer.com URLs migrating across the rest of the year.
Today the product centres on a few moving parts: communities (each one backed by a Microsoft 365 group, a SharePoint site, a OneNote and a Planner plan), open and threaded conversations inside those communities, the personal storyline feed that surfaces in Viva Connections, Teams and Outlook, the Leadership Corner where executives post and run Ask Me Anything sessions, and Town Halls for company-wide broadcasts with Q&A. Microsoft Graph exposes the community and role surface through the engagement API on tenants in native mode, so a connector can read the community inventory, membership and admin roles in a supported way. Pulled into a warehouse next to the rest of Microsoft 365 and the line-of-business stack, that surface answers the questions a Yammer-era admin export never really did: which leadership posts moved a real audience, which communities live or die after the launch wave, and where the stated culture programme lands inside the company.