Enterprise Social describes a new way of working that connects individuals through a dynamic network of people and information. This allows employees to respond faster, accomplish more, and work together more effectively. The document discusses how marketers can use Enterprise Social tools like Yammer, SharePoint Online, and Microsoft Social Listening to gain customer insights, streamline collaboration both internally and externally, and grow brand awareness. It provides examples of how companies have leveraged these tools to improve communication, drive innovation, and engage employees as brand ambassadors.