Cross-platform experiences have become integral to modern life, allowing users to seamlessly transition between devices like laptops, tablets, and smartphones while maintaining consistency and personalization in their interactions. These experiences are increasingly defined by real-time interactivity, which ensures updates and responses occur instantaneously, enhancing user engagement and decision-making. AI technologies, such as natural language processing and machine learning, are pivotal in achieving these real-time interactions by processing large datasets, understanding user behavior, and facilitating seamless communication across devices. They enable applications to deliver personalized responses, streamline workflows, and conduct efficient cross-platform testing by eliminating human error and predicting potential issues. Tools like PubNub provide comprehensive solutions for integrating AI into real-time applications, offering capabilities such as automated responses and live audience engagement for diverse platforms, thereby elevating the user experience in a rapidly evolving digital landscape.