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Web3 is a new generation of the Internet, which is used by, for example, cryptocurrency users. However, most Internet users are unaware that the web revolution is already underway, just as the transition from Web 1.0 to Web 2.0 was hardly noticeable. As William Gibson, the father of cyberpunk, said, the future is now, just unevenly distributed. Web 3.0 - what is it? Web 3 is, very broadly speaking, a decentralized Internet based on blockchain technology. In practice, it means, for example, transactions and financial services made online without intermediaries. It's not everything. The next generation of networks is to use machine learning and artificial intelligence (AI) in unprecedented ways to create online services. As a result, applications and websites will be created that are ideally suited to the needs of the user. How does Web 3.0 work? Web3 works in a decentralized way. What does it mean? A decentralized network uses a P2P (peer-to-peer) infrastructure, i.e. a network of related devices without a single dominant node. This solution is to guarantee the lack of control, greater transparency and security of user data. Blockchains play a key role in Web3. These are distributed databases that record changes in the system. They are the basis for creating more and more applications and cryptocurrency trading. Another branch of Web3 is personalized information and services provided to users. This is due to the increasingly advanced machine learning and AI techniques as well as the developed semantic network, which guarantees very precise search results. History of the web - from Web 1 to Web 3.0 How did the network evolve and what were its next generations? How is Web 3.0 different from Web 2.0? Web 1.0 This is the first version of the World Wide Web (the term was proposed in 1989 by the British scientist Tim Berners-Lee). It lasted until around 2005. Web1 is the time of static HTML pages, decentralized services (e.g. Yahoo) and search engines (Netscape Navigator, Mosaic). The use of Web 1.0 was passive, Internet users could only read and watch content posted on websites. Interaction between users was limited to discussion forums and messengers, which were very primitive compared to Messenger. Web 2.0 Passive content consumption has been replaced by the ability to interact with the pages you visit. Users exchange content and create it themselves. Intermediaries are social media, blogs, network services. A few years ago, Web2 reached its highest level of development. It is a network that we know very well, dominated by digital giants: Google, Facebook, Amazon, Apple. The power of these global corporations has become so great that politicians decided to introduce regulations regarding, among others, collecting and trading user data (solutions proposed, for example, by the European Union). Web 3.0 Web3, in the words of Gavin Wood, is a “decentralized blockchain-based internet ecosystem.” This is an epoch in the history of the World Wide Web that is just beginning. The best-known characteristic element of Web 3.0 is blockchain technology, cryptocurrencies and NFT (non-fungible tokens). The next revolution on the Internet is the answer to the powerful Big-Tech. Thanks to Web 3.0, network users will regain control over their data and will be able to operate on the Internet without intermediaries (eg banks or large Internet services). Interestingly, not everyone is enthusiastic about the concept of Web3. For example, Elon Musk believes that Web 3 is just a marketing slogan.