This research explores the application and impact of cloud computing in social media data processing, analysis, and operations through a case study of the globally popular social media app TikTok. We found that the high availability, scalability, and robust computing power of cloud computing offers technical support to TikTok, enabling it to provide a stable and smooth live streaming experience and accurate e‐commerce services. However, some challenges and limitations remain in live streaming and e‐commerce, such as content authenticity, user privacy, and data security. Our findings offer valuable insights for both theoretical research and practical applications while pointing out issues that require further study and resolution.