The fundamental difference
A CEX (Centralized Exchange) is run by a company. Binance, Coinbase, Kraken — they manage the order book, hold your funds, handle compliance, and provide customer support. You create an account, deposit money, and trade within their system.
A DEX (Decentralized Exchange) is a set of smart contracts on a blockchain. Uniswap, Jupiter, Curve — nobody "runs" them in the traditional sense. You connect your wallet, the code executes, and the blockchain records the trade. No account. No deposits. No company holding your crypto.
Side-by-side comparison
- Custody. CEX holds your funds. DEX — you hold your own keys at all times.
- KYC. CEX requires identity verification. DEX has none.
- Fiat support. CEX lets you deposit/withdraw dollars. DEX is crypto-only.
- Speed. CEX order matching is near-instant. DEX trades depend on block times (seconds to minutes).
- Fees. CEX charges trading fees (0.1%). DEX charges swap fees (0.3% typical on Uniswap) plus blockchain gas fees.
- Token selection. CEX lists vetted tokens only. DEX has everything — including scam tokens.
- Liquidity. CEX generally has deeper liquidity for major pairs. DEX liquidity varies by pool.
- Account risk. CEX can freeze your account. DEX can't — but you can still lose funds to smart contract bugs.
- Order types. CEX supports limit, stop-loss, OCO, etc. Most DEXs only support market-style swaps (some newer DEXs now offer limit orders).
When to use a CEX
- You're buying crypto with fiat (dollars, euros)
- You need advanced order types (limit orders, stop-losses)
- You're trading high-volume pairs where tight spreads matter
- You want a familiar, user-friendly interface
- You're learning and want the safety net of customer support
When to use a DEX
- You want to trade without KYC
- You need to access tokens not listed on CEXs (new launches, niche projects)
- You want to maintain full custody of your funds at all times
- You're participating in DeFi (providing liquidity, yield farming)
- You're in a jurisdiction where CEX access is restricted
The hybrid approach
Most experienced crypto users don't pick one — they use both. A CEX for the bulk of their trading (better liquidity, lower fees on major pairs, fiat access) and a DEX for DeFi activities and early access to new tokens.
The key is understanding the trade-offs and choosing the right tool for each situation.
Where to start
If you're new to trading, start on a centralized platform — or better yet, a demo platform that simulates one. Korvex gives you the CEX experience (order book, limit orders, portfolio tracking) with virtual money. Once you're comfortable with how trading works, you'll be better prepared to navigate DEXs and their additional complexities.