What is Web3?
Understand the evolution of the internet from Web1 to Web3, focusing on decentralization, ownership, and new internet paradigms.
What is Web3? is a free Web3 & DApp Development Fundamentals lesson on CoddyKit. This is lesson 1 of 3. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Web3 & DApp Development Fundamentals learning path, and your progress syncs across the web and the CoddyKit app. The Web3 & DApp Development Fundamentals course includes 3 lessons in total.
Welcome to Web3
What if the internet were owned by its users? Web3 promises exactly that — more control and ownership over your digital life. Let's explore the shift.
The Early Internet: Web1
Web1 (roughly 1990-2004) was the read-only web: mostly static pages, users consuming information, and little interaction beyond clicking links.
The Interactive Web: Web2
Web2, from around 2004, is the social web we use now: user-generated content on centralized platforms like YouTube and Twitter, with apps front and center.
Web2's Centralization Challenge
Web2's centralization brought problems: companies own and profit from your data, platforms can censor content, and a few giants control access.
Enter Web3: The Vision
Web3 is the next step, tackling Web2's flaws with decentralization, user ownership, and transparency — built on blockchain for a more open web.
Core Idea: Decentralization
Decentralization spreads control across a network instead of one company: no single point of failure, community governance, and far less censorship.
True User Ownership
Web3 gives you true ownership: you directly hold your crypto and NFTs, decide who touches your data, and control your own digital identity.
Trustless & Transparent Systems
Web3 systems aim to be trustless and transparent — trust lives in the code and network rules, and transactions are publicly visible on a blockchain.
New Internet Paradigms
Web3 brings new building blocks: DApps running on a blockchain, the metaverse with digital economies, and DAOs governed by code instead of hierarchy.
Quick Check: Web Evolution
Which of the following are key characteristics of Web3, distinguishing it from Web2?
Web3: A New Digital Era
You traced the web from Web1's static pages to Web2's centralized platforms to Web3's decentralized, user-owned vision. Next, the tech behind it.
Frequently Asked Questions
Is the “What is Web3?” lesson free?
Yes — the full text of “What is Web3?” is free to read here on the web. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Web3 & DApp Development Fundamentals course, upgrade to CoddyKit PRO. The Web3 & DApp Development Fundamentals course includes 3 lessons in total.
What will I learn in “What is Web3?”?
Understand the evolution of the internet from Web1 to Web3, focusing on decentralization, ownership, and new internet paradigms. You practise Web3 & DApp Development Fundamentals with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Web3 & DApp Development Fundamentals?
No prior experience is required. Web3 & DApp Development Fundamentals on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 1 of 3.
How long does the “What is Web3?” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Web3 & DApp Development Fundamentals lesson?
Yes. Every Web3 & DApp Development Fundamentals lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- What is Web3?
- Blockchain Core Concepts
- Decentralization & Consensus