Web3 Explained
Content
Key Takeaways About Web3
- Definition: Web3 is the third generation of internet technology built on blockchain, enabling decentralized applications without central authorities
- Evolution: Web1 (1990s-2000s) was read-only with static pages, Web2 (2000s-present) introduced interactive but centralized platforms, and Web3 shifts back to decentralization with user control
- Core components: Blockchain networks, smart contracts, decentralized applications (dApps), cryptocurrencies, and decentralized finance (DeFi)
- Key innovations: Digital identity controlled by users, InterPlanetary File System (IPFS) for distributed storage, and Decentralized Autonomous Organizations (DAOs) for community governance
- Main benefits: User data ownership, permissionless access, censorship resistance, and removal of centralized intermediaries
- Challenges: Technical complexity, scalability limitations, regulatory uncertainty, and questions about true decentralization in practice
Introduction to Web3
Web3 represents a shift from centralized platforms and intermediaries to decentralized networks and protocols, enabling more direct interaction and control by users. Since 2021, Web3 has evolved from a conceptual framework to an ecosystem with real-world applications, billions in investment, and growing mainstream adoption through NFTs, decentralized finance, and blockchain-based solutions.
Web3, also known as the decentralized web, refers to the third generation of internet technology that aims to create a more secure, transparent, and equitable online environment. Built on a foundation of blockchain technology, Web3 enables the creation of decentralized applications (dApps) that run on peer-to-peer networks without central authorities controlling their operations. At its core, Web3 focuses on user-owned data, digital asset ownership through tokenization, and permissionless access to financial and digital services.
In the traditional web (Web 1.0 and 2.0), users interact with centralized applications and services hosted on servers controlled by a single entity. This requires users to trust these central authorities to handle their data and transactions securely—trust that has been repeatedly broken through data breaches, privacy violations, and algorithmic manipulation.
With Web3, applications run on decentralized networks of computers rather than single servers. This architecture eliminates single points of failure and control, allowing users to interact directly with applications and each other without intermediaries. The development of layer-2 scaling solutions and more energy-efficient consensus mechanisms has significantly improved Web3's capacity, speed, and environmental impact since its early iterations.
Recent advances in Web3 include the proliferation of decentralized finance (DeFi) protocols managing hundreds of billions in assets, the integration of AI with blockchain technology, the growth of decentralized autonomous organizations (DAOs) for collaborative governance, and the emergence of soulbound tokens for identity verification. Institutional adoption has accelerated with major financial institutions, tech companies, and even governments exploring and implementing blockchain-based solutions.
Despite facing regulatory challenges and scalability limitations, Web3 technologies continue to demonstrate potential for revolutionizing finance, supply chain management, digital identity, content creation, and voting systems by enabling more secure, transparent, and equitable interactions between parties.
Let’s take a look at how we got to Web3.
Web 1.0 – Decentralized and Open Protocols
The first generation of the internet, which emerged in the early 1990s, was primarily focused on delivering information and content through static web pages. Web 1.0 lasted about until the mid-2000s and was mainly about linking static content across the Internet. The goal was to bring digital information to end users and make it searchable. You could do some basic shopping. It's when Amazon sold only books.
This was a largely read-only web, where users could consume content but had limited ability to interact or contribute to it. Web 1.0 consisted mainly of websites with text or image content with clickable hyperlinks to other pages, built around open protocols like TCP, IP, SMTP, and HTTP.
In this context, ‘open’ means that these protocols were controlled by the Internet community. Most participants were consumers of this content, served up by a motley group of developers.
Web 2.0 – Increasingly Centralized With Proprietary Protocols
The second generation of the internet, which emerged in the early 2000s, was characterized by the rise of social media, e-commerce, and other interactive web applications. Web 2.0 has been focused on delivering dynamic, personalized content and services through large centralized and for-profit platforms like Facebook, Google, YouTube, Twitter and Amazon. While users had more ability to interact and contribute to content, the platforms themselves were still largely centralized, with a few big players controlling much of the online ecosystem.
As the software of these services began to outpace the capabilities of open protocols, a second layer of proprietary, closed protocols were built on top of them. This trend was accelerated dramatically with the explosive growth of smartphones, which run almost exclusively on mobile apps.
A key development that happened in Web2 is the rapid centralization of services, often inside closed communities, and running on the servers of large Internet companies. On the upside, this has allowed billions of people access to amazing technologies and, for better or worse, become ‘creators’ and consume and share any information they want (assuming you don’t live in a totalitarian state).
On the downside, large Internet companies have amassed unilateral power over important questions like who gets network access, who gets thrown off, how revenue is divided, what features are developed and stay supported, how content is distributed (such as Facebook’s algorithms deciding what makes it to the top of your feed) or how user data is secured.
Security, Privacy and The Big Data Grab
Of course, all these great free apps and services aren’t altruistic acts performed by Internet companies. As the saying goes: “If you’re not paying for it, you’re not the customer. You’re the product.” Specifically, the product is your data. And it is captured (often without your consent) and stored in large, centralized databases.
Without going into the revenue models of large Internet companies like Google and Facebook, in a nutshell it works like this: The more data they can capture about a user the better they can personalize the content and ads to show them. This leads to more pageviews, clicks and ultimately more advertising revenue.
One could say that the centralization and exploitation of user data is at the core of Web 2.0. As is the recurring stream of announcements about data breaches. Wikipedia keeps a list of large data breaches. For instance, in 2019, a collection of 2.7 billion identity records, consisting of 774 million unique email addresses and 21 million unique passwords, was posted on the web for sale.
Identity in Web3 Works Differently
Web3 can remedy the online privacy failures that prevail in today’s data-sucking, centralized systems. Secure digital identities will be the tool to make that happen.
Current online identity verification relies on usernames, passwords, email addresses, date of birth, social security numbers, security questions, etc. There is little to none oversight on how this personal information is stored and shared (or sold).
Decentralized identities built on blockchain (which means they will be tied to the wallet address of the user interacting with the application) allow web users to maintain full control over their private data and grant access to it through private keys. Importantly, an identity can be seamlessly used across applications if the user chooses to use the same wallet.
Let's look at an example: For instance, you are interested in your ancestry line.
You swab your mouth or nose or whatever, and you send that to the company that analyzes it. You pay $50, and after a few weeks, you get information that Mike is half Irish, 25% German and so on, so forth. That information is basically now resting with that company that did genetic profiling of you. They probably are going to monetize that in many different ways, e.g. selling their collecteddata in bulk to a pharma company because the pharma company will need to test the efficiency of their new drug designed on different genetics. And rather than having trials, they can do that nowadays through very sophisticated simulations. You gave up your essential data, your genetic makeup, just because you wanted to know your ancestry line, and other people are making money out of that.
So with Web3, we have a data marketplace, and that data is not the genetic test company data. It is still Mike's data and he is able to basically list that as a non-fungible token (NFT). As a data parcel, it can be divided or it can be access controlled. So it means that you can give access to certain portion of your genetics. And you can give that to only people or the company that you feel will meet the profile that you like to work with, and each time somebody accesses or uses that data, you are going to get paid yourself. And you can basically dictate how that data is used, or how long, for what application, by whom and all that.
The Key Components of Web3
There are several key components of Web3:
Blockchain: A blockchain is a distributed database that allows multiple parties to securely record and verify transactions without the need for a central authority. In Web3, blockchains are used to create decentralized applications that can operate without the need for a central server.
Smart contracts: smart contracts are self-executing contracts with the terms of the agreement between buyer and seller being directly written into lines of code. The code and the agreements contained therein exist on the blockchain.
Decentralized applications (dApps): dApps are applications that run on a decentralized network, rather than a single server. They are built on blockchain technology and can operate without the need for a central authority.
Cryptocurrency: Cryptocurrency is a digital or virtual currency that uses cryptography for security and is not controlled by any central authority. It is often used as a means of exchange within Web3 applications.
Decentralized finance (DeFi): DeFi refers to financial applications that are built on blockchain technology and operate in a decentralized manner. These applications can include things like decentralized exchanges, lending platforms, and stablecoins.
Decentralization is at the Core of Web3
The key defining feature of web3 will be that developers link content and programs directly to each other, bypassing intermediary organizations and allowing anyone to participate without monetizing their personal data. Thanks to decentralized coordination and public verifiability, web3 will move power from corporations into the hands of communities (we’ll talk more about these Decentralized Autonomous Organizations (DAOs) below).
These decentralized applications (referred to as dapps) will run on blockchain, decentralized networks of many peer-to-peer nodes (servers), or a combination of the two that forms a cryptoeconomic protocol. This term describes a combination of the tools and concepts from computer science that enable cryptocurrency, such as distributed systems and cryptography, and economic mechanisms in the form of incentives.
The role of (economic) incentives is critical for the development and maintenance of public goods like the decentralized networks of Web3. Cryptocurrencies, i.e., coins and tokens built into blockchains, help solve this problem by providing economic incentives for development, much like the incentives for Bitcoin miners.
The result will be open, trustless and permissionless networks. Open means that they are built by an open community of developers with open-source software and accessible by everyone. Trustless describes a network and all interaction among participants that doesn’t require a trusted third party. And permissionless means that none of the participants requires authorization from a governing body. Everyone can access and interact with them (which does not mean that everyone can do what they want – there are rules).
InterPlanetary File System (IPFS)
A key component in building Web3 dapps is a protocol and peer-to-peer network for storing and sharing data in a distributed file system called the InterPlanetary File System (IPFS).
IFPS powers some major differences to today’s web2:
HTTP downloads files from one server at a time — but peer-to-peer IPFS retrieves pieces from multiple nodes at once, enabling substantial bandwidth savings. With up to 60% savings for video, IPFS makes it possible to efficiently distribute high volumes of data without duplication.
The average lifespan of a web page is 100 days before it's gone forever. The medium of our era shouldn't be this fragile. IPFS makes it simple to set up resilient networks for mirroring data, and thanks to content addressing, files stored using IPFS are automatically versioned.
IPFS powers the creation of diversely resilient networks that enable persistent availability – with or without internet backbone connectivity. This means better connectivity for the developing world, during natural disasters, or just when you're on flaky coffee shop wi-fi.
The way IPFS works is that when you add a file to IPFS, your file is split into smaller chunks, cryptographically hashed, and given a unique fingerprint called a content identifier (CID). This CID acts as a permanent record of your file as it exists at that point in time. If you add a new version of your file to IPFS, its cryptographic hash is different, and so it gets a new CID. This means files stored on IPFS are resistant to tampering and censorship – any changes to a file don't overwrite the original, and common chunks across files can be reused in order to minimize storage costs.
Decentralized Autonomous Organizations (DAOs)
In a nutshell, DAOs are online organizations that coordinate activity among a distributed community of stakeholders. They are decentralized because no single individual or centralized party can change rules; autonomous because votes are tallied and decisions implemented based on logic written into a smart contract, without human intervention.
Governance structures determine how an organization makes decisions that align the interests of participants. The challenges with many existing organizational forms, such as corporations, are that decisions are not made in a transparent way and often stakeholders face high barriers to entry to participating in governance.
That’s where DAOs come in. They are supposed to form an emergent governance model for new kinds of organizations built around transparency and inclusion. The principles can be applied to a wide variety of organizations, including non-profits, collectives, cooperatives, and investment funds.
The basic structure of a DAO revolves around a crypto token, tracked on the block chain, that serves as a measure of an individual's stake in the group. In most DAOs, tokens reward participation, guarantee voting rights, and, importantly, are tradable outside the DAO – which means they can accumulate value.
One of the most prominent DAOs, Friends With Benefits (FWB), has received a $10 million venture capital investment. The FWB community of Web3 builders and artists has issued one million tokens ($FWB) on the blockchain, about one third of which is retained in a community treasury (to be distributed according to the wishes of the DAO, with a set number disbursed every few months to members, based on contributions like providing liquidity or serving on committees). The rest circulates on the open market. To join FWB, you can buy $FWB tokens or earn them. People who own at least 75 FWB tokens can propose resolutions in binding elections where each token equals one vote.
You can find an excellent introduction to DAOs here.
Decentralized Finance – DeFi
One element of Web3 that is gaining a lot of traction is decentralized finance, which involves conducting financial transactions on the blockchain without assistance from banks or the government.
Decentralized Finance or DeFi (also referred to as Open Finance) describes decentralized financial products and services such as saving, lending, trading, insuring. Imagine a global, open alternative to every financial product you are using today – but accessible online to everyone in the world.
Already, there are DeFi dapps that allow you to lend out money and earn interest, take out a loan, receive investments into your start-up, exchange assets, or create stablecoins – privately issued cryptocurrencies that maintain a stable value relative to another asset, for instance by being pegged to the Euro or U.S. dollar. Stablecoins offer the advantages of cryptocurrencies without the volatility.
Once the rules for a financial product are written in code (a ‘smart contract’) and deployed to the blockchain, DeFi dapps remove intermediaries and run themselves with little to no human intervention. That means financial institutions are removed from the equation in favor of peer-to-peer transactions and automation.
What this means is that, even without a bank account (there are almost 2 billion unbanked adults in the world), consumers can obtain and store cryptocurrency in virtual wallets, send and receive payments from mobile devices, access alternative credit markets, and invest in global asset markets – often without interacting with traditional financial infrastructure at all.
Challenges and Critiques of Web3
While Web3 has the potential to transform the internet, it faces significant implementation challenges and foundational critiques that must be addressed for widespread adoption.
Practical Adoption Barriers
Technical complexity: Web3 technologies remain complex and difficult to understand for non-technical users, limiting usability and creating barriers to entry for developers and businesses.
Scalability: Many Web3 networks struggle with transaction throughput and speed, making them impractical for applications requiring high volume or real-time processing.
Interoperability: Different blockchain networks often cannot communicate effectively, creating fragmentation and limiting collaboration between Web3 applications.
Regulation: Regulatory uncertainty and increasing scrutiny create compliance challenges that may slow adoption and force compromises on decentralization principles.
User adoption: The learning curve and friction associated with using Web3 applications remain significant barriers for mainstream users accustomed to seamless Web2 experiences.
Fundamental Critiques
Re-emerging centralization: Despite decentralization rhetoric, Web3 shows signs of centralization in practice. Ownership of crypto assets is highly concentrated, and most users access blockchains through centralized services, creating new gatekeepers.
Economic sustainability questions: Critics argue many Web3 projects lack sustainable economic models beyond speculation. Token economics often prioritize early investors and create extraction mechanisms rather than genuine long-term value.
Governance reality: Token-based governance in DAOs can lead to plutocracy rather than democracy, with wealthy participants wielding disproportionate influence. Participation rates in governance often remain low, undermining claims of community control.
Environmental concerns: While newer consensus mechanisms improve efficiency, the comparative resource usage of decentralized systems versus centralized alternatives remains a concern for environmentally conscious critics.
Utility deficit: After years of development and billions in investment, some critics question whether Web3 has delivered applications with genuine utility beyond financial speculation that justify the added complexity and resource requirements.
Opposing Views
Web3 proponents acknowledge these challenges but view them as growing pains rather than fatal flaws. They argue that centralized corporations, governments and regulators, and traditional financial institutions may resist Web3 adoption to protect established business models and control. Meanwhile, Web3 advocates work on technical solutions to scalability, improving user experiences, and demonstrating real-world utility beyond speculation.
The debate around Web3's potential versus its limitations continues to evolve as the technology matures and more use cases move from concept to implementation.
Frequently Asked Questions About Web3
What is Web3?
Web3, also known as the decentralized web, refers to the third generation of internet technology that aims to create a more secure, transparent, and equitable online environment. It's built on blockchain technology, allowing for decentralized applications (dApps) that run on peer-to-peer networks without central authorities controlling their operations. Web3 focuses on data ownership, tokenization, and enabling more secure and private internet experiences.
How is Web3 different from Web 1.0 and Web 2.0?
Web 1.0 (early 1990s to mid-2000s) was primarily read-only with static web pages built on open protocols like TCP/IP and HTTP. Web 2.0 (early 2000s to present) featured interactive social media and e-commerce platforms but became increasingly centralized with proprietary protocols controlled by large corporations. Web3 shifts back to decentralization but with advanced functionality, giving users control over their data and direct interaction with applications without intermediaries.
What are the key components of Web3?
The key components of Web3 include: blockchain (distributed databases for secure transaction records), smart contracts (self-executing agreements written in code), decentralized applications (dApps that run on decentralized networks), cryptocurrencies (digital currencies using cryptography for security), and decentralized finance (DeFi, financial applications built on blockchain technology).
How does identity work in Web3?
In Web3, identity is managed through decentralized identities built on blockchain, typically tied to a user's wallet address. This allows users to maintain full control over their private data and grant access through private keys. Unlike traditional online identity verification (usernames, passwords, personal information), Web3 identities can be seamlessly used across applications if the user chooses to use the same wallet, giving individuals control over how their data is accessed and monetized.
What is a DAO in Web3?
DAOs (Decentralized Autonomous Organizations) are online organizations that coordinate activity among distributed stakeholders. They are decentralized because no single individual can change rules, and autonomous because votes are tallied and decisions implemented based on smart contract logic without human intervention. DAOs use crypto tokens to measure an individual's stake in the group, reward participation, guarantee voting rights, and potentially accumulate value.
What is DeFi in Web3?
DeFi (Decentralized Finance) refers to financial products and services built on blockchain technology that operate without traditional intermediaries like banks. These include lending platforms, exchanges, investment opportunities, and insurance services. DeFi applications enable global access to financial services even for the unbanked, allowing users to lend money and earn interest, take out loans, receive investments, exchange assets, or create stablecoins—all through peer-to-peer transactions and automation.
What is IPFS in Web3?
The InterPlanetary File System (IPFS) is a protocol and peer-to-peer network for storing and sharing data in a distributed file system. It's a key component of Web3 that retrieves files from multiple nodes simultaneously (unlike HTTP which downloads from one server), creating substantial bandwidth savings. IPFS uses content addressing where files are split into chunks, cryptographically hashed, and given unique identifiers, making them resistant to tampering and censorship.
What are the main barriers to Web3 adoption?
The main barriers to Web3 adoption include: technical complexity making it difficult for non-technical users, scalability limitations affecting widespread use, interoperability challenges between different networks and protocols, regulatory uncertainty, and the time needed for user adoption and education. Additionally, resistance may come from centralized corporations whose business models are threatened, governments concerned about regulation, environmentalists worried about energy consumption, and privacy advocates with concerns about potential misuse.
What are the main criticisms of Web3?
The main criticisms of Web3 include: re-emerging centralization despite decentralization rhetoric (with concentrated ownership and reliance on centralized access points), questionable economic sustainability beyond speculation, governance systems that favor wealthy participants rather than true democracy, continued environmental concerns about resource usage compared to centralized alternatives, and a perceived lack of practical utility for ordinary users that justifies the added complexity and resource requirements.
Is Web3 truly decentralized?
Web3's decentralization is debated. While the underlying blockchain technology enables decentralized operation, practical implementation often shows centralization tendencies. Cryptocurrency ownership is highly concentrated among a small percentage of wallets, most users access blockchains through centralized exchanges and services, and many projects rely on venture capital funding. Additionally, governance power in DAOs often correlates with token wealth rather than broad community participation. Web3 advocates view these as temporary limitations that will improve as the ecosystem matures.
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