The digital environment is increasingly personalized, intelligent, and responsive, driven by real-time analytics and adaptive design frameworks. Traditional user experience (UX) models rely on static behavioral assumptions, whereas modern digital ecosystems demand dynamic UX adaptation based on real-time user behavior, cognitive load, emotional state, contextual variables, and interaction history. This research article reviews advancements in adaptive UX and proposes a layered Adaptive Real-Time User Experience Model (AR-UXM) that integrates user behavior analytics, machine learning, context-awareness, psychophysiological metrics, and continuous experiential feedback loops. The model supports personalized interfaces, predictive interaction assistance, and automated experience optimization, promoting higher engagement, satisfaction, and digital well-being.