DeFi
Decentralized Finance (DeFi) is a sector within the cryptocurrency and blockchain space which aims to provide a decentralized version of the products available in traditional finance- without central control and at a lower cost with potentially higher returns. These products include loans, interest-bearing deposits and borrowing services.
The advantages of decentralized finance are that it addresses the problems we have with the traditional banking system. For example, decentralized finance protocols are controlled by multiple people, and all participants are required to abide by the rules written into the smart contracts underlying the protocols.