A dApp is an application that runs on a network of a decentralized blockchain platform powered by smart contract development solutions. Decentralization is the main principle in dApps. The core concept behind dApps is a decentralized collection of rules describing a particular application. On a distributed, public blockchain, this set of conditions sits, contrary to a centralized system governed by any large entity, like Facebook or Amazon. It requires autonomy to control it and to be resilient to censorship. Think of Ethereum as the internet and all the dApps as the websites running therein. To be considered decentralized, an application must be autonomous, consensus mechanism-driven, decentralized services, and token-propelled.