DeFi (Decentralized Finance)
By Menno — 13 years in crypto, 3 bear markets survived, zero paid promotions
Last updated: March 2026
DeFi is a category of financial services built on blockchain technology that operates without traditional intermediaries like banks. It includes lending, borrowing, trading, and earning yield through smart contracts.
Decentralized Finance (DeFi) refers to financial applications built on blockchains that replicate traditional banking services without centralized intermediaries.
Key DeFi categories: - Decentralized exchanges (DEXs): trade tokens directly from your wallet (Uniswap, SushiSwap) - Lending/borrowing: earn interest or borrow against your crypto (Aave, Compound) - Stablecoins: crypto tokens pegged to fiat currencies (USDC, DAI) - Yield farming: earning rewards by providing liquidity to DeFi protocols - Derivatives: trading futures and options without centralized exchanges
DeFi's advantages: permissionless access (no account applications), transparency (all transactions on-chain), composability (protocols can build on each other), and 24/7 availability.
DeFi's risks: smart contract bugs, impermanent loss for liquidity providers, regulatory uncertainty, and the complexity of managing multiple protocols.
For most investors, understanding DeFi is important even if you don't actively use it — DeFi activity and TVL (Total Value Locked) are indicators of ecosystem health for Layer 1 blockchains.
Related Terms
Smart Contract
A smart contract is a self-executing program stored on a blockchain that automatically enforces the terms of an agreement when predefined conditions are met, without needing a middleman.
Yield Farming
Yield farming is the practice of earning returns by depositing crypto into DeFi protocols — through lending interest, liquidity provision fees, or protocol reward tokens.
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