Web 2.0 represents the evolution of the internet from static web pages to dynamic, user-driven content. It emphasizes collaboration, sharing, and user-generated content through social media, blogs, wikis, and interactive platforms. Web 2.0 technologies enable richer user experiences, real-time communication, and greater interactivity. Key features include AJAX, APIs, and cloud services, fostering innovation and community-driven development. By leveraging these tools, businesses can enhance engagement, streamline operations, and create more personalized and responsive digital experiences.