Web3, or DWeb, has added characteristics when compared to the internet we know of today. Websites built on Web3 are decentralized, and the content of the website is peer-to-peer hosted. So, you will often hear the terms Web3, DWeb, or decentralized websites interchangeably.
Web3 apps are built on blockchains, decentralized networks, or a combination of the two to form a protocol. Apps built on Web3 are referred to as dapps (decentralized apps). In Web3, you wouldn't deploy apps running on a single server or store data on a single database.
Web3 data is found based on its content, meaning information is stored in multiple places at once. As a result, the information is accessed through a vast peer-to-peer network. In comparison, when accessing content on the traditional web, the HTTP protocol is used as web addresses to find content and information stored on a single server.
Web3 enables us to break down the extensive centralized databases owned and controlled by internet companies. It protects us from surveillance since information becomes decentralized - meaning third parties cannot access them or control the content.