$ETH hereum is a decentralized, blockchain-based platform that serves as a computing platform for building and deploying decentralized applications (DApps) and running smart contracts. It uses a native cryptocurrency called Ether (ETH) for transactions and gas fees. Unlike Bitcoin, which primarily focuses on digital currency, Ethereum's strength lies in its ability to execute self-executing code (smart contracts) and host various DApps, including DeFi, NFTs, and more.