what is Yammer Office 365

Yammer

         Yammer is a private social networking service used helps us to  get connected to the organizational colleagues  , disseminate information across organization and  teams,Discuss ideas, disseminate updates, and crowd-source answers from colleague, coworkers around the globe. 

Its parent Organization is Microsoft Corporation, and founder is David O Sacks 

Yammer gives your team a swiftly, smarter way to connect and collaborate across your organization. 

You can Sign in with your Office 365 username and password, or create an account using your corporate email address