A Decentralized Application, also known as a “DApp”, are applications that run on a decentralized peer-to-peer network and are governed by all the members, as opposed to a single entity that centrally owns the underlying servers and databases. In Ethereum, a DApp is backed by a smart contract containing the business logic. This makes a DApp to run on the Ethereum blockchain. The smart contract is developed using Solidity, an object-oriented, high-level language for implementing smart contracts on blockchain platforms.
contracts/: Contains all the smart contracts.
migrations/: These migrations are similar to other web development frameworks that require migrations to change the state of a database. Whenever we deploy smart contracts to the blockchain, we are updating the blockchain's state, and therefore need a migration.
src/: Contains client-side application
truffle-config.js: Main configuration file for the Truffle project.