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Web3 & DApp Development Fundamentals · Lesson

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 — 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, one of 3 lessons in the course, and your progress syncs across the web and the CoddyKit app.

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, and the Web3 & DApp Development Fundamentals course includes 3 lessons in total. 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.

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; this is — lesson 1 of 3, so you can start here or from the beginning and move at your own pace.

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

  1. What is Web3?
  2. Blockchain Core Concepts
  3. Decentralization & Consensus
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