Development and deployment on platforms like Ethereum involve creating and managing decentralized applications (dApps) using blockchain technology. Ethereum, a leading blockchain platform, supports smart contracts—self-executing contracts with the terms of the agreement directly written into code. Developers use Ethereum’s programming language, Solidity, to write these smart contracts. Once coded, contracts are deployed onto the Ethereum blockchain, where they run in a decentralized manner across a network of nodes. This deployment ensures transparency, security, and immutability, as the contract’s execution and data are distributed across the blockchain. Ethereum’s robust ecosystem also provides tools and frameworks, like Truffle and Hardhat, which facilitate development and testing, making it easier for developers to build and deploy complex dApps.