Data integrity is crucial for realtime update systems in sports, media, and entertainment apps as it ensures the overall accuracy, completeness, and consistency of data. Users expect seamless realtime experiences with no out-of-order or lost data. Realtime updates systems must deliver messages precisely once to all subscribers regardless of their location or network connection quality. Sports, media, and entertainment companies need to invest in building robust realtime updates systems that guarantee data integrity while also addressing scalability and reliability challenges.