What Is a Centralized Exchange (CEX) and Why Do Institutions Still Trust Them?

This article was first published on Deythere.

A CEX, or centralized exchange, is a cryptocurrency trading platform owned by a company or organization that manages and administers users’ funds and their private keys. 

These exchanges function like traditional stock exchanges or brokerages; they keep an internal order book, match buy/sell orders, and keep track of all trades.

As the exchange is “custodial” itself, it offers high liquidity, fiat on/off ramps and customer support to ease trading. CEXs continue to be the hallmark of crypto markets to this day. Based on available data, centralized exchanges facilitated around $5.1trillion spot trading volume in Q3 2025.

How Centralized Exchanges Work

Centralized exchanges rely on a corporate-run matching engine. Users register accounts and deposit funds (crypto or fiat) into their exchange wallets. 

When a user deposits cryptocurrency into a CEX, they take custody of that crypto and assign the balance to user’s account in an internal ledger at the exchange (sometimes resulting in what amounts to an internal “IOU” for each deposited item). 

Trades are executed off-chain. The exchange internally matches orders and debits/credits in/from the users account on the database without sending every trade to the blockchain. 

In fact, transactions only ever touch the blockchain when a user withdraws currencies or when coins move between exchanges. This makes trades very quick and cheap since there is no on-chain confirmation necessary.

The assets aren’t directly controlled by the users but rather are stored and managed by the exchange, which has their private keys. 

This custodial approach enables these centralized exchanges to provide more sophisticated services such as futures, margin trading, options, staking, and trading bots, all of which can accommodate high volumes of trade and a wide variety of coins. 

Its centralized nature also allows the exchange to go deep in liquidity (deep order books) and offer easy-to-use interfaces. But it also means users have to trust the platform’s security and solvency.

Centralized or Decentralized Exchanges: Notable Differences

CEXs and DEXs each allow users to trade crypto, but fundamentally they differ on custody, technology and regulation. 

Centralized exchanges are operated by one entity and they store user funds as well as private keys in centralized wallets. 

Decentralized exchanges (DEXs) on the other hand allow trading directly from a user’s own wallet based on smart contracts, there is no middleman holding custody. This leads to major trade-offs:

As Britannica writes, Centralized exchanges are the “easiest to use but perhaps least secure” and DEXs “offer greater user control,” at the expense of usability. 

For instance, users have to trust the exchange (counterparty risk) and tend to have their identity verified in CEXs, while in DEXs, users can trade anonymously but need to handle a wallet and gas fees personally. 

Why Use a Centralized Exchange?

There are many reasons why centralized exchanges continue to be popular. Here are some of the main advantages of a CEX:

High Liquidity: CEXs have a large number of buyers and sellers in one place; therefore, users normally find tighter bid/ask spreads and faster order execution.

Fiat On-Ramps: Because nearly all CEXs accept government currencies (USD, EUR, etc.), users can purchase crypto with bank transfers or credit cards.

Usability and Support: These CEX platforms are usually user-friendly with supportive customer support, also great for beginners to start.

Advanced features: They provide wide array of products (spot, margin, futures, staking) and tools (charting,APIs), suitable for retail or pro traders.

Regulatory Compliance: Good CEX will adhere to the legal requirements and KYC/AML procedures so users have some consumer protection and cover.

It is these benefits that see CEXs become the de-facto gateway to trading cryptocurrencies for many. In fact, experts observe that the ease of access to CEXs is is what makes CEXs continue to be a common on-ramp for crypto. 

Institutional-level investors like CEXs for their stability and regulatory acceptance, too. Messari reported that approximately 31% of Bitcoin’s circulating supply is currently held by institutions and almost half of that institutional Bitcoin sits in large CEXs.

In other words, the liquidity, fiat onramps and UX of centralized exchanges cater to a very wide audience.

Risks and Limitations of CEXs

However, centralized exchanges come with several disadvantages. The custodial model requires that users put their faith in an exchange to handle their funds. 

As such, big losses, history shows, can result from hacks, fraud or mismanagement. A 2023 report said that crypto exchanges lost roughly $1.7 billion to hacks for the year. In general, CEXs have custody over the assets of users, which makes them attractive targets for attackers. Other risks include:

Counterparty Risk: Insolvency or malintent on the part of a CEX can cause users to lose funds (Mt. Gox, FTX incidents). Trust in the exchange is key.

Regulatory Control: CEXs adhere to the law and are able to block or seize accounts at the government’s request. With the need to pass identity verification (KYC) for traders, there is less privacy.

Downtime and Technical Risks: There is the potential for exchange downtime or software failure, halting trading or withdrawals.

Fees and limitations: CEXs might have high fees for trading, withdrawals as well as rules (limits on orders and minimum limit).

Anonymity and Privacy: Users forfeit ownership as well as privacy, with the exchange having full control over the coins and personal details.

In conclusion, centralized exchanges may be more convenient for traders to use but due caution should be given over to them due to the introduced custodial and regulatory risks. 

Market Trends and Expert Analysis

New data show that centralized exchanges remain the backbone of crypto markets. As of mid-2025, CEXs traded 60%-93% of daily global volume, Messari data show. 

In Q3 2025 the centralized platform leaders saw approximately $5.1trillion in spot value alone. The biggest CEXs (Binance, Coinbase, Bybit, Crypto. com and others) have hundreds of millions of users and support for hundreds of assets.

CEXs are also interestingly adopting decentralization. For instance, some have debuted on-chain DEX modules or have staking and liquidity pools in their apps. 

Coinbase has started integrating a couple of decentralized exchanges for select tokens, and Binance is growing their on-chain campaigns. 

This hybrid mode also de-emphasizes the distinction between CEX and DEX, in an attempt to provide users with the best aspects of both experiences.

Institutional crypto adoption is another factor. Institutions hold about one-third of all Bitcoin, and roughly half of that is warehoused on major exchanges. 

In response, CEXs have been adding in institutional-grade offerings, including advanced analytics, custody and OTC desks.

Following expert analysis, the monopoly of CEXs still stands overwhelmingly strong amid the rise of DeFi. 

The best exchanges all continue to innovate as retail and professional traders continue the search for exchanges to cater their needs. 

Meanwhile, a growing behavior in the space is for many users to just “HODL” assets themselves in their private wallets and not at exchanges. 

This might affect the direction in which exchanges transform, but it does not yet undermine their core value.

Conclusion

Centralized exchanges are still dominating the trade volume, according to recent research. They invariably secure the bulk of the market volume and provide the liquidity, fiat onramps, and user-friendly touches most traders value. 

CEXs, at the same time, require users to relinquish some control,  they must trust a third party with custody of their funds and adhere to regulations. 

Alternatively, decentralized exchanges sacrifice convenience and liquidity for complete user control.

In the end, whether one uses CEX or DEX comes down to personal preference: if convenience and support (except custodial risk) are more important, then a centralized exchange probably is the right choice. If self-custody and privacy come first in your mind, a non-custodial platform might be the better choice.

Frequently Asked Questions About Centralized Exchanges(CEX)

What makes a CEX different from DEX? 

A CEX is owned and controlled by a single organization, which holds users’ funds in wallets under its control. A DEX operates on the blockchain by way of smart contracts, allowing users to trade directly from their wallet to another without an intermediary. On the one hand, CEXs have higher trade volume and support fiat while, DEXs provide more user control and privacy.

What is the point of using a centralized exchange? 

CEXs are popular among traders because of their ability to trade on them as they tend to be more user-friendly and also have higher liquidity. CEXs offer easy-to-use interfaces, customer support and fast access to fiat-to-crypto. They also provide by-products (margin, futures, staking) that the vast majority of DEXs do not offer.

Are centralized exchanges safe? 

CEXs are quite secure (cold storage, 2FA, audits) but are very appealing for hackers. Users also need to select reputable exchanges and take precautions to reduce custodial risk.

Do the centralized exchanges require KYC/ID for persons? 

Yes. For the majority of regulated CEXs, users have to pass the identity check (KYC) to be able to trade, which reduces privacy. DEXs generally do not require identification checks.

Glossary

Centralized Exchange (CEX): A cryptocurrency exchange that is run by a centralized organization. Custody of user assets and trades are executed from the exchange’s order book.

DEX: Exchange where trades are executed user-to-user through smart contracts on the blockchain. Users maintain control of their funds, managing their own private keys.

Liquidity: The degree to which it is easy and speedy to buy or sell an asset without moving its price much. CEXs are normally more liquid as they come with bigger order books.

Custody: The holding of assets. Simply put, in a CEX the custody is “custodial” (the exchange is holding your coins); yet on a DEX it’s “non-custodial” (users are holding them).

Fiat Currency: Legal tender (such as USD or EUR). Centralized exchanges typically facilitate fiat-to-crypto trading, which decentralized exchanges do not tend to provide.

References

binance 

gemini

britannica

coinmarketcap

messari

coingecko