DeFi Deep Dive
Decentralized Lending and Borrowing
AMMs, lending, yield, impermanent loss, and self-custodial finance.
In this lesson
- How decentralized lending markets work
- Why collateral replaces credit checks
Key takeaways
- 1Depositors supply assets and borrowers post collateral
- 2Interest rates respond to utilization
- 3Under-collateralized lending is harder without trusted identity
Lesson summary
The intermediate question behind decentralized lending and borrowing is simple: credit is replaced by collateral, utilization, and liquidation rules.
Mental model
Decentralized Lending and Borrowing, without the jargon
The intermediate question behind decentralized lending and borrowing is simple: credit is replaced by collateral, utilization, and liquidation rules. The concept becomes useful only when it improves a real decision about custody, execution, liquidity, or protocol risk.
- How decentralized lending markets work
- Why collateral replaces credit checks
Mechanics
How to reason about decentralized lending and borrowing
Decentralized Lending and Borrowing starts with depositors supplying assets while borrowers lock collateral and pay algorithmic interest rates.
When reviewing decentralized lending and borrowing, separate what the interface shows from what the protocol, market, or custody layer can actually guarantee.
The concept is only learned when the learner can use decentralized lending and borrowing to reject a weak setup, not just describe a strong one.
- Depositors supply assets and borrowers post collateral
- Interest rates respond to utilization
- Under-collateralized lending is harder without trusted identity
Example
Decentralized Lending and Borrowing in a real decision
For example, a borrower can access stablecoin liquidity without selling ETH, but must keep collateral above liquidation thresholds. The lesson is useful only when the learner can name which evidence confirms the claim and which condition would invalidate it.
Common mistakes
Where people slip up with decentralized lending and borrowing
A common mistake with decentralized lending and borrowing is treating overcollateralized borrowing as low risk because no bank is involved. That shortcut makes the concept feel simple while hiding the part that can actually create loss.
Risk notes
Before you rely on decentralized lending and borrowing
The main risk is collateral volatility, oracle faults, liquidity crunches, and liquidation penalties can turn borrowing into forced selling. In practice, the risk becomes larger when markets move quickly, liquidity thins, or interfaces compress important warnings.
- Check collateral factor.
- Estimate liquidation price.
- Review borrow rate changes.
Practice
Put decentralized lending and borrowing to work
- Check collateral factor.
- Estimate liquidation price.
- Review borrow rate changes.
Review
Key terms
- 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.
- Liquidation
- Forced closure of a leveraged position when margin can no longer cover its losses.
- Liquidity
- How easily an asset can be bought or sold without moving its price much.
Source notes
Editorial references
These references are starting points for verifying the mechanisms, risk checks, and product context behind this lesson.
Before you continue
Can you do these?
- Check collateral factor.
- Estimate liquidation price.
- Review borrow rate changes.
Related learning
Keep reading
Checkpoint
Finish this lesson
Pass the check to save progress, then continue through the track in order.
Lock in this lesson
Answer every question correctly to complete the lesson.
DeFi lending markets usually match…