What Is Web3? A Beginner’s Guide
Web3 is a vision for the internet that emphasizes users’ control over their digital identities, data, and assets, often using blockchains, cryptocurrencies, and decentralized applications to enable open collaboration and cross-platform use.
From Web2 to Web3
On mainstream Web2 platforms, account data, content records, and usage rules are typically managed by the platform, and users often cannot fully transfer them to other services. Web3 aims to give users more direct control over their identities, data, and digital assets and enable their use across different applications, reducing dependence on any single platform.
How Web3 Applications Work
Web3 applications are often built on public blockchains and are commonly known as decentralized applications. Users can sign in by “connecting a wallet,” which can serve both as a means of identification and as a tool for managing crypto assets. These applications emphasize open access, transparent rules, and composability, allowing different services to connect and build upon one another.
Common Use Cases and the Limits of the Concept
The material lists use cases such as digital payments, digital art, membership communities, event tickets, and in-game items, while also emphasizing that creators and users can interact more directly. However, Web3 is an umbrella term for a set of technologies and ideas; it does not mean that every project is fully decentralized, free to use, or free of intermediaries. The specific user experience depends on the actual design.
Original Tutorial
https://learn.metamask.io/zh-CN/lessons/what-is-web3
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