DeFi platforms are decentralized applications that offer traditional financial services, such as lending, borrowing, and trading, without the need for intermediaries. Powered by blockchain technology, they use smart contracts to automate and secure transactions. DeFi platforms like Uniswap, Aave, and Compound allow users to lend or borrow crypto assets, provide liquidity, and earn interest. These platforms offer greater financial freedom, transparency, and control over funds, disrupting traditional banking systems and reshaping global finance.