DeFi (Decentralized Finance) is an open financial system built on blockchain that replicates banking services — lending, trading, earning yield — without banks, brokers, or any central authority.
Traditional finance requires trust in intermediaries: banks hold your money, brokers execute your trades, exchanges custody your assets. DeFi replaces all of these with smart contracts — self-executing code on a blockchain that automatically enforces the rules of financial agreements without any human in the middle.
The result: anyone with a crypto wallet and internet connection can access the same financial services previously available only to those with bank accounts, credit history, or broker relationships. A farmer in Kazakhstan can lend to a trader in Tokyo, with the terms enforced by code and settled on-chain.
Decentralized exchanges (DEX) like Uniswap and Curve let you swap tokens directly from your wallet — no account needed, no KYC, no withdrawal limits. Trading happens via automated market makers (AMM) rather than order books.
Lending protocols like Aave and Compound let you deposit crypto as collateral and borrow other assets, or earn interest by supplying liquidity to the protocol. Interest rates adjust algorithmically based on supply and demand.
Yield farming involves moving assets across multiple DeFi protocols to maximize returns — depositing, borrowing, providing liquidity, and collecting protocol rewards simultaneously. High potential returns, high complexity, high risk.
Platforms like Eidex are CeFi (Centralized Finance) — they provide the user experience, customer support, and regulatory compliance that DeFi lacks, while offering access to many of the same assets. The key difference: on Eidex, the platform custodies your assets. In DeFi, you always control your own keys.
For most new users, starting with a centralized exchange makes sense. Our guide on crypto exchange vs exchanger explains how different platforms serve different needs.
Smart contract exploits have cost DeFi users billions — over $3 billion in 2022 alone. Rug pulls occur when developers abandon projects and drain liquidity. Liquidation happens automatically if collateral value drops below threshold — no warning, no grace period. Complexity creates errors — wrong addresses, incorrect transaction parameters, irreversible mistakes.