DeFi Explained: What Is Decentralized Finance?

Defi

2025-04-07

DeFi TVL hit $257B in 2024 (DeFiLlama). Learn how AMMs, lending protocols, yield farming, and enterprise DeFi risks actually work — for architects and CTOs.

Frequently Asked Questions

Enterprise-grade permissioned DeFi protocols exist (Aave Arc, Maple Finance, Centrifuge), and institutional DeFi and RWA tokenization TVL surpassed 33 billion USD by mid-2025 (PowerDrill AI, 2025). Most publicly traded companies are in evaluation or pilot mode. Audit requirements, regulated custody, and AML compliance frameworks are still maturing, but crypto-native firms are deploying at scale today.

Three categories dominate: (1) smart contract exploits: cumulative losses from the top 100 DeFi hacks exceeded ten billion USD with only a fifth of victims audited beforehand (Halborn, 2025); (2) oracle manipulation: single-source price feeds can be pumped, as the nine-figure Mango Markets attack demonstrated; and (3) impermanent loss: LP positions structurally underperform simple holding when paired token prices diverge.

TVL (total value locked) is the total USD value of assets deposited across DeFi protocols: lending pools, AMMs, staking vaults, and yield aggregators. It's the primary adoption metric. DeFi TVL grew over 100 percent in 2024, driven by liquid staking growth and the entry of real-world asset tokenization. TVL fluctuates with underlying token prices.

AMMs use the constant product formula x times y equals k. When a trader buys Token B with Token A, they shift the reserve ratio and the price adjusts to maintain k. The larger the trade relative to pool depth, the greater the slippage. Uniswap built its entire multi-trillion cumulative trading volume on this single equation, reaching the two-trillion milestone by 2024 (The Block).

DeFi (decentralized finance) is a financial system built on public blockchains using smart contracts instead of banks or brokers. It's non-custodial, permissionless, and fully transparent. By year-end 2024, DeFi had attracted over 151 million users and locked in hundreds of billions in protocol assets, growing by over 100 percent in a single year. Any wallet address can interact with any DeFi protocol at any time without account approval.