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Lesson 40 of 73
intermediate6 minQuiz included

DeFi Deep Dive

TradFi, CeFi, and DeFi

AMMs, lending, yield, impermanent loss, and self-custodial finance.

Updated Oct 21, 2026GaiaEx Academy Editorial

In this lesson

  • TradFi vs DeFi vs CeFi
  • What makes DeFi distinct

Key takeaways

  1. 1DeFi is permissionless, composable, and on-chain
  2. 2CeFi offers crypto services via a custodian
  3. 3TradFi relies on regulated intermediaries

Lesson summary

TradFi, CeFi, and DeFi are different ways to organize trust.

Mental model

The core idea behind tradfi, cefi, and DeFi

TradFi, CeFi, and DeFi are different ways to organize trust. The product may look similar, but custody, transparency, and recourse are not the same.

  • TradFi vs DeFi vs CeFi
  • What makes DeFi distinct

Mechanics

How to reason about tradfi, cefi, and DeFi

TradFi relies on regulated institutions and legal claims.

CeFi offers crypto services through centralized operators.

DeFi uses smart contracts and wallet-based access, with fewer gatekeepers and fewer recovery options.

  • DeFi is permissionless, composable, and on-chain
  • CeFi offers crypto services via a custodian
  • TradFi relies on regulated intermediaries

Example

TradFi, CeFi, and DeFi in practice

A lending product at a bank, a crypto lender, and an on-chain lending protocol can all offer borrowing, but the enforcement and custody models differ completely.

RememberDecision rule: Classify the product by who holds assets and who enforces the rules.

Common mistakes

Common mistakes with tradfi, cefi, and DeFi

Calling something DeFi because it involves crypto is inaccurate. If a company controls deposits and balances, it is closer to CeFi.

Risk notes

Risk checks for tradfi, cefi, and DeFi

TradFi has counterparty and legal risk, CeFi has custody and solvency risk, and DeFi has contract and oracle risk.

  • Identify custody model.
  • Identify rule enforcement.
  • Match the risk to TradFi, CeFi, or DeFi.

Practice

A short drill for tradfi, cefi, and DeFi

  • Identify custody model.
  • Identify rule enforcement.
  • Match the risk to TradFi, CeFi, or DeFi.

Review

Key terms

CeFi
Centralized Finance — crypto services run by a custodial company (e.g. an exchange) rather than on-chain code.
Custody
Who controls the private keys. Custodial = a third party holds them; non-custodial = you do.
DeFi
Decentralized Finance — permissionless, composable financial services built on smart contracts.
Impermanent Loss
The loss a liquidity provider faces when pooled asset prices diverge versus simply holding them.
Oracle
A service that feeds real-world data (like prices) to smart contracts on-chain.

Source notes

Editorial references

These references are starting points for verifying the mechanisms, risk checks, and product context behind this lesson.

ethereum.orgEthereum security and scam preventionPractical reference for private keys, recovery phrases, phishing, approvals, and scam patterns.ethereum.orgEthereum walletsReference for wallet responsibilities, keys, and user-side custody.ethereum.orgSmart contract securityReference for common contract vulnerabilities, audits, and defensive review practices.GaiaEx DocsAPI security best practicesProduct reference for signing, keys, allowlists, and operational security.

Before you continue

Can you do these?

  • Identify custody model.
  • Identify rule enforcement.
  • Match the risk to TradFi, CeFi, or DeFi.

Related learning

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Next lessonYield FarmingIntermediate Track course pathPrevious lessonWeb3 Business ModelsIntermediate Track course pathTrack overviewIntermediate Track73 lessonsGlossaryCeFi and related terms5 terms from this lesson

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