In plain English
What Centralized exchange means
A centralized exchange sits between buyers and sellers. It keeps an order book, matches trades, and usually manages deposits, withdrawals, and internal account balances. Because the platform controls the infrastructure and often the keys, users rely on it for execution, recordkeeping, and asset custody.
Why it matters
The exchange’s structure affects custody, fees, liquidity, execution rules, and whether transfers require platform approval. It also determines how much trust the user places in the operator’s security, solvency, and compliance processes. A centralized exchange is not the same thing as the blockchain network itself.
Example
A customer deposits USDC, places a limit order to buy ETH, and the exchange matches that order against another customer’s sell order. The trade can settle on the exchange’s internal ledger before any on-chain withdrawal occurs. This example is simplified.
Quick answers
Common questions
Does a centralized exchange always have an order book?+
Usually, but not always in the exact same format. Some platforms use order books, while others may offer broker-style execution or hybrid models.
Is a centralized exchange the same as a broker?+
Not necessarily. Some platforms act as exchanges, some as brokers, and some combine both functions.
Sources