Web 2.0 is characterized by user-generated content, social networking, and interactive web applications, while Web 3.0, also known as the Semantic Web, is focused on machine-readable data, decentralized applications, and the use of artificial intelligence to make the web more intelligent and personalized. Web 3.0 aims to make data more connected, interoperable, and understandable by machines, and to create a more decentralized and user-centric internet.
Web 2.0 consists of websites where users can create posts. Web 3.0 consists of websites where you own content. Web 3.0 is basically blockchain based web platforms.