DeFi platforms are decentralized financial services built on blockchain technology, offering services such as lending, borrowing, trading, and yield farming without intermediaries. These platforms eliminate the need for banks, enabling peer-to-peer financial transactions that are transparent, secure, and borderless. Users can access various DeFi applications (DApps) for financial services, providing opportunities for greater financial inclusion and control over assets. Popular DeFi platforms include Uniswap, Aave, and Compound, each offering distinct features for decentralized trading and lending.