This annotated bibliography explores the multifaceted role of social media in modern business organizations. It analyzes ten scholarly sources, encompassing surveys, literature reviews, and case studies, to understand how social media impacts communication, collaboration, and organizational performance. The sources examine the adoption of social media tools like blogs, wikis, and instant messaging, highlighting their effectiveness in team communication and crisis management. The bibliography also investigates the affordances of social media, such as visibility and editability, and their influence on information sharing, relationship building, and employee engagement. Furthermore, the sources address the importance of internal communication, innovation culture, and the implications of social media on external communications, including customer relations and branding. The research also touches on the impact of social media on the public sector, emphasizing transparency and accountability. Finally, the bibliography highlights the importance of considering both management and employee perspectives in the implementation of social media strategies and the potential risks of information leakage. The findings suggest that social media has become an essential component of modern business operations, influencing both internal and external communications, and driving employee engagement and organizational success. The bibliography provides a comprehensive overview of the current state of research on social media in business, highlighting its benefits, challenges, and future potential.