Web 2.0 and Web 3.0 are two different phases in the evolution of the internet.

Web 2.0 refers to the period of the internet's development that began in the early 2000s. During this phase, the internet became more interactive and collaborative, and users could create and share content more easily. Social media, blogs, wikis, and other user-generated content platforms are examples of Web 2.0 technologies. Web 2.0 emphasizes user-generated content and the power of social networks.

Web 3.0 is the next phase of the internet's development, also known as the "Semantic Web." It is a more intelligent, interconnected, and decentralized internet that focuses on data and automation. Web 3.0 is characterized by blockchain technology, decentralized applications (DApps), smart contracts, and artificial intelligence (AI). The aim of Web 3.0 is to create a more transparent and trustworthy internet that can enable new types of decentralized services and applications.

In summary, Web 2.0 was about user-generated content and social networking, while Web 3.0 is focused on decentralized services, blockchain, and AI.