The integration of social media into tourism marketing has significantly transformed how destinations are promoted and consumed. Traditional marketing methods have given way to platforms that facilitate real-time information sharing, enabling destinations to reach vast audiences instantaneously. This chapter explores the profound impact of social media on the tourism industry, particularly focusing on user-generated content (UGC) and its role in shaping traveler behavior and destination management. The work discusses the critical phases of traveler engagement with social media—pre-travel, during-travel, and post-travel—highlighting the importance of UGC in building trust and authenticity. Additionally, the chapter examines the role of social media in enhancing visibility, engaging visitors, and promoting sustainable tourism practices. Challenges such as cultural appropriation and overtourism are also addressed, underscoring the need for ethical practices in content creation. Ultimately, the chapter emphasizes the importance of strategic social media use in maximizing tourism benefits while maintaining the integrity of travel experiences.