DeFi, short for decentralised Finance, represents a revolutionary financial ecosystem built on blockchain technology, aiming to recreate and improve traditional financial systems. Originating primarily on the Ethereum blockchain, DeFi utilizes smart contracts which are programmable, self-executing contracts with the terms of agreement directly written into code. This decentralised setup eliminates intermediaries like banks, enabling peer-to-peer financial transactions while enhancing transparency, security, and access. Key characteristics of DeFi include open-source protocols, permissionless access, and interoperability, allowing users worldwide to engage in various financial activities such as lending, borrowing, trading, and investing without the need for intermediaries. DeFi strives to democratize finance by offering inclusivity and financial autonomy to users, creating a global marketplace accessible to anyone with an internet connection.