---
title: Decentralized Finance (DeFi)
description: Page on Vedang Vatsa's site: https://veda.ng/glossary/defi
canonical: https://veda.ng/glossary/defi
last_updated: 2026-09-22
type: text/markdown
---
# Decentralized Finance (DeFi)

Source: https://veda.ng/glossary/defi
Author: Vedang Vatsa (https://veda.ng/about)

Decentralized finance is financial services on a blockchain without a bank, broker, or exchange in the middle. Those firms take a cut. They can freeze accounts. They can deny service. DeFi puts the same jobs in smart contracts.

A DEX lets you trade peer to peer. A lending protocol lets you deposit assets and earn interest, or borrow against collateral. An insurance protocol sells cover against contract failure. A staking protocol pays you to help secure a network. No company runs the service. The code runs on the chain. The more people use it, the more value sits in those contracts. Total value locked in DeFi has exceeded $100 billion.

Anyone with a wallet can use it. You do not need a bank account or a local branch. Protocols also compose. You can stack a lending market on a trading venue the way you stack Lego. That is the upside.

The downside is that the code is still young. Hacks happen. Contracts fail. Liquidations wipe people who did not understand the risk. DeFi is useful for traders and people who can read a protocol. It is a real alternative to traditional finance, with a real failure rate.

Read the contract, the oracle, and the liquidation math before you deposit size. The yield is the fee for taking that risk. ethereum.org describes DeFi as financial products on public contracts: lending, trading, and stablecoins without a company holding the books.

Glossary index: https://veda.ng/glossary