1) The term social media refers to the use of web-based and mobile technologies to turn communication into interactive dialogue. Andreas Kaplan and Michael Haenlein define social media as "a group of Internet-based applications that build on the ideological and technological foundations of Web 2.0, and that allow the creation and exchange of user-generated content." Social media are media for social interaction, as a set of methods to enhance social communication, using ubiquitously accessible and scalable communication techniques.
2) social media is a set of technologies and channels targeted at forming and enabling a potentially massive community of participants to productively collaborate. IT tools to support collaboration have existed for decades. But social-media technologies, such as social networking, wikis and blogs, enable collaboration on a much grander scale and support tapping the power of the collective in ways previously unachievable.
Six core principles underlie the value of social-media solutions, and, in combination, serve as the defining characteristics that set social media apart from other forms of communication and collaboration.