CEXs function similarly to traditional stock markets by utilizing an order book. You can think of them as an open market with a central authority that connects buyers and sellers. On a CEX, it’s common for all users to have access to the complete order book (which includes all the buy and sell orders happening on the exchange). These two aspects help with what’s called “price discovery,” allowing any user to find out the “last done price” or “market price,” along with the order book’s depth. In return for managing the marketplace, the exchange takes a small fee from each trade.
By 2025, centralized crypto exchanges like Binance, Coinbase, and OKX also use an order book and keep many of the features that traditional CEXs provide.
Understanding about CEX
CEX users don’t really swap crypto or fiat currencies with one another. Instead, when they put their money into an exchange, that exchange takes control of those assets and gives the trader a matching amount of IOUs. The exchange keeps track of each user’s IOUs internally as they change hands during trades, and it only turns them into real currency when the user withdraws their funds.
As of 2020, CEXs are the most common way cryptocurrency exchanges operate. The quickness and cost-effectiveness of processing transactions through a single authority make them a handy option for day traders and crypto investors looking to buy and sell crypto.
However, relying on a central entity for CEXs does come with some downsides. They don’t disclose their internal workings to users, which creates a lack of transparency that can lead to shady practices like wash trading and price manipulation.
Since they hold onto users’ assets, centralized exchanges become attractive targets for potential attackers, both from outside and within the organization.
Technical glitches or coordinated attacks can cause significant downtime for CEX services, resulting in missed trading opportunities for their customers. Lastly, these exchanges are also vulnerable to government censorship, which allows regulators to freeze or seize user funds and compel the exchanges’ parent companies to disclose their customers’ personal information.
CEX vs DEX
| Feature | CEX (Centralized Exchange) | DEX (Decentralized Exchange) |
|---|---|---|
| Control | Managed by a central authority or company | No central authority; run by smart contracts |
| User Custody | Exchange holds users’ funds and private keys | Users keep full control of their funds |
| KYC/Verification | Usually requires KYC/AML identity verification | Often no KYC required, anonymous trading possible |
| Liquidity | High liquidity due to many users and market makers | May have lower liquidity, depends on user participation |
| Speed | Fast transactions and order matching | Slower, depending on blockchain network speed |
| Ease of Use | User-friendly, easy for beginners | Can be complex for beginners |
| Security Risks | Risk of hacks, insider fraud, or exchange shutdown | Risk of smart contract bugs, but less centralized hacking |
| Trading Options | Advanced features: margin, futures, lending, staking | Limited options, usually spot trading and liquidity pools |
| Fees | Usually higher, includes trading and withdrawal fees | Generally lower, with network gas fees |
| Examples | Binance, Coinbase, OKX | Uniswap, PancakeSwap, SushiSwap |
Conclusion
CEXs are super handy and effective, but they do need users to put their trust in a third party. If you prioritize simplicity and liquidity, they tend to be the go-to option. However, it’s crucial to weigh that convenience against the potential security and regulatory risks that come with it.