The main characteristic of a decentralized web application (DApp) is that it operates on a peer-to-peer network, typically using blockchain technology. Unlike traditional web applications hosted on centralized servers, DApps distribute data across multiple nodes, enhancing security, transparency, and resistance to censorship. This architecture allows for greater user control and ownership of data because information is not stored in a single location. Decentralized applications often enable functionalities like smart contracts, allowing automated transactions without intermediaries. Popular examples include platforms like Ethereum and various decentralized finance (DeFi) services.