Decentralized finance (DeFi) is similar to our current financial system, except it's run without the use of large centralized organizations. Blockchain technology has made decentralized money possible. We require this technology for finance to become decentralized. It might be either the Ethereum or Bitcoin blockchains. The Ethereum blockchain is currently used to build the majority of DeFi applications. For example, on the Ethereum blockchain, lending, saving, and borrowing are all conceivable.