Last summer, Microsoft officials said the company would continue to offer a standalone Yammer client for those who wanted it. They also outlined a roadmap for Yammer, which included commitments to bringing Yammer more tightly into the Microsoft fold by moving Yammer into Microsoft's own datacenters and integrating Azure Active Directory with the Yammer service in order to ensure it met various compliance and security criteria.
Microsoft is still aiming to tie Yammer into Office 365 Groups by June 2016.Once Yammer is integrated with Groups, Microsoft will encourage users to take advantage of "cross-suite scenarios," such as moving Yammer conversations to Skype calls; schedule meetings using Outlook calendar; access files via OneDrive; create tasks in Planner all from inside a Yammer group.
According to Microsoft's blog post today, every Office 365 user with a Yammer license will be able to access Yammer from the Office 365 app launcher or start a Yammer conversation from SharePoint, Office 365 Video Portal and, soon, Delve and Skype Broadcast.
Office 365 customers who do not want Yammer turned on by default can shut it off, a Microsoft spokesperson confirmed.
"Similar to SharePoint Online and Exchange Online, Yammer is enabled by default for all users who are assigned an Office 365 license. IT admins who are not ready to fully adopt Yammer in their organization, can un-assign Yammer licenses for those who should not access Yammer from Office 365," the spokesperson said when I asked.