It is currently the most important topic in the field of blockchain and cryptocurrencies, so what exactly is DeFi: by definition it is an ecosystem consisting of applications based on publicly distributed ledgers to facilitate financial services without prior permission. For example, a blockchain such as Ethereum uses smart contracts and decentralized applications that have been made. Created for specific jobs, but the purpose of DeFi is to eliminate centralization and eliminate intermediaries in dealings on things like savings, trading loans, and more written programs such as Ethereum smart contracts or decentralized applications are executed automatically upon ensuring that certain conditions are implemented thus giving both users complete security. But the benefits of DeFi are that it is not managed by any organization or entity. The code is transparent and the decentralized apps are designed to be global. Used without prior permission to create unauthorized and interoperable sharing. These are just some of the reasons why DeFi is so exciting to its users It gives people complete control over it. Their financial affairs as well as helping users in places where banking is nearly impossible