DeFi is referred to as financial applications built on blockchain technologies, typically using smart contracts. It consists of applications and peer-to-peer protocols developed on decentralized blockchain networks that require no access rights for easy lending, borrowing or trading of financial tools. It provides an individual to have complete control over their assets. With DeFi, the markets are always open and there are no centralized authorities who can block payment and deny you access to anything. DeFi may potentially contribute to a more robust and transparent financial infrastructure. Eventually, DeFi can support innovated business models and work with different DeFi providers to form DeFi ecosystem.