<p>The evolution of modern technology has shifted from device-centred interaction to seamless, invisible, and intelligent environments. Pervasive Computing and Ambient Intelligence (AmI) represent this transition, enabling computing systems to integrate naturally into everyday life. This research paper explores the interaction between pervasive computing and ambient intelligence, focusing on their conceptual foundations, applications, challenges, and the future direction of human-centred digital ecosystems. A mixed-method approach is used to evaluate the impact of intelligent pervasive environments on user satisfaction, system efficiency, and decision-making accuracy. The paper includes a hypothesis-driven regression analysis, demonstrating that higher levels of ambient intelligence significantly improve user trust, comfort, and task performance. The findings show that pervasive intelligent systems hold transformative potential for healthcare, smart homes, education, and public services, while raising concerns regarding privacy, ethics, and data security. This study concludes that pervasive intelligence is not merely a technological advancement but a holistic shift toward humanised and responsible digital living.</p>