The ICOs of 2017, the DeFi that heralded the bull market of 2020, the mainstreaming of non-fungible tokens (NFTs) in 2021, and the scaling solutions such as EVM-compatible chains and Layer2 Rollups driven by a surge in user demand, all these notable blockchain innovations are inseparable from a blockchain named Ethereum. This article will guide you through what Ethereum is, how it operates, the important trajectories of its development, and some of its well-known applications.