This book examines organizational communication via social media, exploring the various forms of communication organizations can offer on these platforms, the key services organizations can provide to their diverse audiences, and the motivations behind organizations' reliance on social media platforms as communication tools. The book comprises six chapters focusing on different types of social media, organizational communication through social media, reputation management via social media, the elements of organizational reputation on these platforms, and crisis management through social media, including crisis management mechanisms and stages. It also addresses social media marketing, its various components, and the promotional mix on social media. Finally, the book reviews recent research trends in organizational communication via social media.