The DeFi, or Decentralized Finance (Decentralized Finance in English), refers to a set of open, accessible, and automated financial services built on public blockchains, primarily Ethereum. Unlike traditional finance (TradFi), DeFi does not rely on any centralized institution (bank, broker, etc.): it works through smart contracts that automatically execute the rules of the protocols.

With DeFi, it is possible to :

• Borrow or lend cryptocurrencies without intermediaries,

• Exchange digital assets through decentralized platforms (DEX),

• Provide liquidity and earn yields (yield farming),

• Participate in derivatives, insurance, stablecoins, etc.

Advantages :

• Global accessibility 24/7

• Total transparency (everything is visible on the blockchain)

• Control of funds by the user (no custody by a third party)

Risks :

• Volatility of assets

• Bugs or vulnerabilities in smart contracts

• Scams or rug pulls

DeFi represents a revolution in access to financial services, but it remains a constantly evolving ecosystem that requires caution and education.