DeFi or decentralized finance is a big blockchain trend today. Peer-to-peer trading and lending-borrowing activity without the intervention of a middleman or third party has become possible due to DeFi. The exponential growth of DeFi in 2020-2021 has really surprised the world and provided an alternative to traditional finance with transparency and better financial inclusion. TVL (Total Value Locked) of DeFi is $95 billion+ today i.e., 375% year-on-year growth. DeFi originated on the Ethereum blockchain and maximum DeFi activity is still happening on it but many other blockchains are showing high promise. The future of DeFi is definitely going to be multi-chain.