Web 4.0, known as the "Intelligent Web," is the next phase of the internet, integrating AI, automation, and advanced data processing for a seamless and personalized experience. It enables machines to think, learn, and interact like humans. Key features include AI-driven personalization, ubiquitous connectivity, voice and gesture control, enhanced security through blockchain, and human-like interactions via AI chatbots and virtual assistants. This evolution aims to create a fully autonomous and interconnected digital world.