Decentralized finance · 10 min
A beginner's guide to decentralized finance
Lending, swapping, and earning without handing your money to a single company.
Decentralized finance — DeFi — is a set of programs on a blockchain that move money according to public code. Instead of a bank matching a lender and a borrower in a private system, a smart contract holds the rules in the open.
The usual pieces: a wallet you control, a network that can run programs, and an application that lets you swap one asset for another, lend, borrow, or provide liquidity. You connect the wallet. You sign. The contract executes.
The promise is access without an account application. The cost is that bugs, bad code, and your own mistakes are yours. There is often no customer-service refund.
Start by understanding swaps and fees. Then understand that a high yield usually means high risk. If you cannot explain where the yield comes from, do not chase it.
DeFi is optional. You can learn the vocabulary and still keep funds in simple self-custody. Understanding the map is not the same as walking into every room.