If you’ve ever bought or sold crypto, you’ve probably used either a CEX (centralized exchange), like where we're at now, or a DEX (decentralized exchange).
They both let you trade, but how they work and what they require from you are very different.
Similarities
Both allow you to buy, sell, and trade cryptocurrencies.
Both display token prices, charts, and trading pairs.
Both aim to provide liquidity and price discovery for digital assets.
Key Differences
How they work:
CEX: Operated by a centralized company that manages the platform (e.g. Binance).
DEX: Runs on smart contracts, with no central authority (e.g. Uniswap, PancakeSwap).
User custody:
CEX: You deposit funds into the exchange’s wallet.
DEX: You retain full control of your assets via a non-custodial wallet (like Trust Wallet or MetaMask).
Ease of use:
CEX: Beginner-friendly UI, fiat on-ramps, customer support.
DEX: More technical; often requires connecting a wallet and paying gas fees.
Examples:
Real-life Analogy
A CEX is like using a stock brokerage app where you trust the platform to manage and keep track of your trades and funds.
A DEX is like trading face-to-face using a smart contract where you keep your own wallet, and no middleman holds your money.
Why It Matters
CEXs are convenient but come with custodial risk. Therefore, you don’t fully control your keys.
DEXs offer privacy, control, and censorship resistance but require more personal responsibility.
Knowing when to use each helps you balance security, convenience, and decentralization.