The Definitive Guide to DeFi

Reviewed by Diario de un Inversor · UpdatedJune 13, 2026

Our review

Decentralized Finance — DeFi — promises to replicate the core services of the traditional financial system (lending, exchange, yield generation) through smart contracts that execute without human intermediaries. This collaborative guide approaches that promise with more technical depth than most introductions: it covers lending protocols such as Aave and Compound, decentralized exchanges including Uniswap and Curve, algorithmic and collateral-backed stablecoins, and yield farming strategies with their respective risk profiles. The book's value lies in its granularity — it does not stop at the decentralization slogan but explains what actually happens inside a liquidity pool, how annualized yield (APY) is calculated, and what specific risks — impermanent loss, smart contract exploits, oracle risk — are absent from marketing materials. The unavoidable limitation is technological obsolescence: the DeFi ecosystem evolves faster than any printed book can track. Published in 2022, some protocols referenced have since been hacked, discontinued, or superseded. Use it as a conceptual framework and supplement it with current sources before interacting with any live protocol.

Key takeaways

• In DeFi, the code is the counterparty: smart contracts execute the rules without intermediaries, but their vulnerabilities are also, inevitably, code.
• Yield farming generates real returns, but impermanent loss in liquidity pools can exceed those returns in volatile market conditions.
• Stablecoins are not interchangeable: collateral-backed, algorithmic, and centralized variants carry radically different risk profiles.
• Before depositing assets into any DeFi protocol, verifying independent security audits is a non-negotiable minimum.

Fact

Published in 2022, the DeFi ecosystem reached its peak total value locked (TVL) in November 2021 at approximately 180 billion dollars, before the collapse of the Terra/Luna protocol in May 2022.