DeFi (Decentralized Finance)

Decentralized Finance, or DeFi, replaces traditional financial intermediaries with self-executing smart contracts on public blockchains, primarily Ethereum. Users can lend their crypto assets and earn interest, borrow against their holdings, trade tokens on decentralized exchanges, and earn yields by providing liquidity — all without a bank account, credit check, or intermediary. The core principle is that anyone with an internet connection can participate.

Key DeFi protocols include Aave and Compound for lending, Uniswap for decentralized trading, and Lido for liquid staking. Total value locked in DeFi protocols peaked at over $200 billion in 2021 and has stabilized at lower levels as the market matured. DeFi offers higher yields than traditional finance but carries significant risks including smart contract bugs, oracle manipulation, and liquidation risk during volatile markets.

Regulatory treatment of DeFi remains uncertain globally. The EU MiCA regulation includes provisions for DeFi protocols. The US has taken an enforcement-focused approach. DeFi protocols face challenges around user protection, anti-money laundering compliance, and tax reporting. Despite these challenges, DeFi continues to innovate and has processed trillions of dollars in transaction volume, demonstrating the viability of decentralized financial infrastructure.