A Centralized Exchange (CEX) is a cryptocurrency trading platform operated by a company that acts as an intermediary between buyers and sellers.
Detailed Explanation
Centralized exchanges like Coinbase, Binance, and Kraken operate order book-based trading systems where the exchange matches buy and sell orders. Users create accounts, complete identity verification (KYC), deposit funds, and trade against other users. CEXs custody user assets, provide fiat on/off ramps, and offer features like margin trading, futures, and staking. They generate revenue through trading fees, listing fees, and spread markups.
Why It Matters
CEXs remain the primary entry point for most crypto users, handling the majority of global trading volume. Their familiar interfaces, customer support, and fiat integration make them accessible to beginners. However, the "not your keys, not your coins" principle applies — assets on a CEX are controlled by the exchange, creating counterparty risk as demonstrated by the FTX collapse. Many experienced users trade on CEXs but withdraw to self-custody wallets.
Key Considerations
Choose a CEX based on regulatory compliance, security track record, fee structure, and available trading pairs. Enable all available security features including two-factor authentication, withdrawal whitelists, and anti-phishing codes. Consider the exchange's insurance coverage and proof-of-reserves transparency.
Example
A new user creates a Coinbase account, verifies their identity, links their bank account, and deposits $1,000. They then buy 0.015 BTC using a market order. The Bitcoin sits in Coinbase's custodial wallet until the user decides to withdraw it to their personal hardware wallet.
Related Terms
Frequently Asked Questions
A Centralized Exchange (CEX) is a cryptocurrency trading platform operated by a company that acts as an intermediary between buyers and sellers.
CEXs remain the primary entry point for most crypto users, handling the majority of global trading volume.
Regulated exchanges like Coinbase (US), Kraken (US/EU), and Bitflyer (Japan) are generally considered safest due to regulatory oversight and insurance coverage. However, no exchange is risk-free. The safest practice is to withdraw assets to self-custody after trading.