In May of 2018, we will remove the following Yammer features, and encourage customers to explore the following alternatives in Office 365:
Yammer’s native org chart feature. Use the rich, interactive organization chart in Delve, Microsoft Teams, people search, and people cards that surface in many Office 365 experiences including Outlook, SharePoint, and OneDrive.
Recent Activity module on the home page. Activity from your connections can be seen in Delve, in the activity web part in SharePoint, and in people cards that surface in many Office 365 experiences including Outlook, SharePoint, and OneDrive.
Syncing contacts on the mobile apps. User profile data is automatically synced via Azure Active Directory, while Yammer uses the Microsoft Graph to recommend colleagues most relevant to you.
The Yammer desktop notifier application. The new Yammer desktop application surfaces notifications and provides a fully-featured Yammer experience for desktop users.
We know that any change to our services may disappoint some customers, but we are confident that you will appreciate the investments we are making to ensure that Yammer is the most secure and capable platform for employee engagement and communications, integrated with best-of-breed experiences in Microsoft 365.
We remain as committed as ever to Yammer, and look forward to sharing new capabilities of Yammer, including deeper integration with Office 365 groups and SharePoint, at the SharePoint Virtual Summit. Stay tuned for details!