Smart contract deployment involves uploading a self-executing contract onto a blockchain. These contracts contain coded rules and conditions that automatically execute when specific criteria are met. The process begins with writing the smart contract using a programming language, often specific to a blockchain platform, such as Solidity for Ethereum. After coding, the contract is tested on a testnet to ensure it functions correctly without errors. Once confirmed, the smart contract is deployed to the main blockchain. This involves sending a transaction that includes the contract code and paying a small fee. After deployment, the contract is assigned an address on the blockchain, making it accessible to users and other contracts. Smart contracts offer advantages like transparency, security, and automation. They enable various applications, from decentralized finance to supply chain management, by ensuring that transactions and agreements execute based on predetermined conditions without the need for intermediaries.