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Web3

What Is Web3? The Architecture of the Decentralized Web

Marcus Chen
Marcus Chen Published: Aug 30, 2026 • Updated: Sep 6, 2026
⏱ 7 min read 👁 1,399 views
What Is Web3? The Architecture of the Decentralized Web
Table of Contents

The Evolution of the Internet

To understand Web3, it is helpful to look at the three major epochs of the internet:

  • Web 1.0 (Read): Static HTML websites hosted on open protocols (HTTP, SMTP). Users were consumers of content published by webmasters.
  • Web 2.0 (Read-Write): Interactive platforms and social networks (YouTube, Meta, Google). Users create content, but centralized platforms own the data, user identities, and infrastructure.
  • Web 3.0 (Read-Write-Own): Decentralized protocols where users authenticate via cryptographic key pairs rather than centralized usernames and passwords.

The Web3 Tech Stack

Interface Layer: Next.js, React, HTML5
Middleware: Ethers.js, Viem, Web3.js
Node RPC: Infura, Alchemy, Self-Hosted Geth
Decentralized Storage: IPFS, Arweave
Settlement Layer: Ethereum, Bitcoin, Layer 2s
Important Educational Disclaimer: CoinAd.in provides educational information about blockchain and cryptocurrency technology. Content on this website should not be considered financial, investment, legal, trading, or tax advice. Never share your private key or seed phrase with anyone.
Marcus Chen

About the Author: Marcus Chen

Software engineer and cryptography educator. Writes practical guides on cryptographic primitives, wallet architectures, and Web3 development.

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