What is Web3? Meaning, examples and how it works
Web3 is the idea of an internet built on blockchains, where users own their digital assets, data and identity through a crypto wallet instead of handing them to large technology companies. Apps run on smart contracts on public blockchain networks rather than on a single company’s servers, and tokens are used to pay, reward and vote.
It is a vision more than a finished product. Some parts already work, such as decentralised finance and NFTs; others, like a Web3 replacement for social media platforms, are still small or experimental.
What is Web3, in plain words?
Web3 is an umbrella term for internet services where you don’t need a trusted third party to hold your money or your account. Instead of logging in with an email and password that a company controls, you connect a crypto wallet. Your balances, digital goods and in-game items are recorded on a blockchain, and you can take them to other apps.
The term was popularised by Ethereum co-founder Gavin Wood in 2014. It is written as Web3 to set it apart from “Web 3.0”, an older idea with a different meaning (see below).
How the web evolved: Web 1.0, Web 2.0 and Web3
The world wide web has gone through three broad phases, often summed up as read, read-write and read-write-own.
| Phase | Roughly | What users do | Who controls it |
|---|---|---|---|
| Web 1.0 | 1990s to early 2000s | Read static web pages | Site owners |
| Web 2.0 | Mid-2000s to now | Read and write: user generated content, social media | Big tech companies |
| Web3 | Emerging | Read, write and own | Users and token holders, in theory |
The early web: Web 1.0
The early web was mostly read-only. Companies and enthusiasts published web pages, and users were content consumers: you could read, search and email, but rarely interact.
Web 2.0: platforms and data
Web 2.0 made the internet interactive. Anyone could post videos, reviews or comments, and online communities grew around a few huge platforms. The catch: centralised entities store data about you, including personally identifiable information, and earn money from customer data through advertising. Your Twitter account, now X, belongs to the platform, which can suspend it.
Web3: ownership
Web3 tries to give individual users more control. Assets sit in your own wallet, rules are written in code, and changes to some services are decided by token holders instead of a central authority.
Core ideas of Web3
The core ideas of Web3 come down to four principles:
- Decentralised: services run on decentralised networks of computers rather than one company’s servers.
- Permissionless: anyone with a wallet can use the apps, without asking for approval.
- Ownership: direct ownership of digital tokens and digital identity, held in your own wallet.
- Native payments: value moves on a peer to peer network using crypto, without a bank in the middle.
Blockchain fundamentals behind Web3
Web3 is built on a few pieces of blockchain technology. You don’t need to know the programming languages involved, but it helps to know the building blocks.
Blockchains and crypto wallets
A blockchain is a shared ledger that records who owns what. Crypto wallets hold the keys that prove ownership and let you sign in to Web3 apps. Our wallet entry explains how they work.
Smart contracts
Smart contracts are programs on a blockchain: when certain conditions are met, the code automatically performs an action, such as swapping tokens or paying out a loan. They replace the company that would otherwise run the service.
Decentralised applications
Decentralised applications (dApps) are the apps built on smart contracts. Common examples:
- Decentralised finance: lending, borrowing and trading without a bank, as explained in our DeFi entry. Trading happens on a decentralised exchange.
- NFTs: non fungible tokens for art, collectibles, tickets and in-game items. See NFT.
- DAOs: online communities where token holders vote on decisions, and the voting outcome is carried out by code. See DAO.
Web3 vs Web 3.0 and the semantic web
Web 3.0 originally meant the semantic web: Tim Berners-Lee’s idea of a web where data is machine readable, so a search engine or other software can understand what information means, not just display it. That vision is about data standards, not blockchains or tokens. Today the two terms are often used interchangeably, but they describe different things.
A worked example: using a Web3 app from Europe
Here’s what using a Web3 app typically involves, and what it costs. Say you want to swap €200 of a stablecoin for another token on a decentralised exchange:
- Buy €200 of USDC on a MiCA-licensed exchange and withdraw it to your own wallet. You pay the exchange’s withdrawal fee.
- Connect your wallet to the decentralised exchange and approve the swap. You pay a gas fee to the blockchain.
- The swap goes through. Say the pool charges a 0.3% swap fee: that’s €0.60 on €200.
There’s no account to open, but also no support desk if you approve the wrong contract or the token turns out to be a scam.
Why Web3 matters to you in the EU
Web3 changes who protects you, and EU rules reflect that:
- Licensed vs decentralised. MiCA regulates the companies that provide crypto services, such as exchanges and custodians. Fully decentralised services with no company behind them largely fall outside it, so you have no licence holder to complain to.
- No compensation scheme. Crypto assets aren’t covered by investor compensation schemes such as the Dutch one. Losses from hacks, bugs or scams in Web3 apps are your own.
- The travel rule. Moving more than €1,000 from an exchange to your own wallet means the exchange must check the wallet is yours.
- Taxes still apply. In Germany, rewards you receive from Web3 apps, such as staking-like rewards, can count as other income when you get them. In the Netherlands, tokens in your own wallet count towards box 3.
Problems and criticism of Web3
Web3 has real limits, and widespread adoption is far from certain:
- Centralised infrastructure. Many “decentralised” apps still depend on a few cloud providers, website hosts and data services.
- Concentrated ownership. Early investors and teams often hold most of the tokens, so “user ownership” can mean ownership by a few.
- Scams and hacks. Fake tokens, phishing sites and smart contract bugs cost users money regularly.
- Hard to use. Seed phrases, gas fees and network choices are confusing, and mistakes can’t be undone.
- Privacy. Blockchains are public, so your transactions can be traced, and data written to a blockchain can’t easily be deleted.
How to start with Web3 as a beginner
If you want to try Web3, start small and keep the risks contained:
- Learn the basics on a licensed exchange first. Buy and sell a little crypto where there is a regulator behind the platform.
- Set up a self-custody wallet. Write the seed phrase down on paper, store it offline and never share it.
- Use money you can afford to lose. A first experiment with €20 to €50 teaches you how gas fees, networks and approvals work.
- Keep experiments separate. Use a second wallet for new apps, so a bad approval can’t touch your savings.
- Check every address. Bookmark the official app, and ignore links sent in messages or social media replies.
The bottom line
Web3 is the idea of an internet you own instead of rent: assets and identity in your own wallet, services run by smart contracts. It gives you greater control, and with it full responsibility. Start small, stick to well-known apps, and keep most of your money on licensed platforms until you understand what you are signing.
Related terms
Questions people ask
What is Web3 in simple terms?
Web3 is the idea of an internet where you own your digital assets and accounts through a crypto wallet, instead of a company storing them for you. It runs on blockchains and smart contracts rather than on one company's servers.
Is Web3 the same as crypto?
Not quite. Crypto is one part of Web3: the tokens used to pay, reward and vote. Web3 is the wider idea of apps, identity and ownership built on blockchains, though in practice most Web3 activity today is crypto-related.
What is a Web3 crypto coin?
There is no single Web3 coin. The term is used for tokens of blockchains and apps that power Web3 services, such as ether on Ethereum. Treat any token marketed as "the Web3 coin" with extra caution.
Is Web3 the same as Web 3.0?
No. Web 3.0 originally meant the semantic web, an idea of machine-readable data that computers can understand. Web3 is the blockchain-based vision of user ownership. People often mix up the two names.
Is Web3 good or bad?
Neither, by itself. It gives users more control over their digital assets, but it also removes the safety nets of Web 2.0: no password reset, no customer support and, for most apps, no regulator.