These days, the cryptocurrency market is experiencing some truly interesting changes. As hacking incidents at centralized exchanges continue to occur, many people are turning their attention to DEXs, or decentralized exchanges. I’ve also recently had some experiences that really show how different they are.

First, I think it’s important to clearly understand what CEX means. CEX stands for centralized exchange, which includes domestic exchanges like Upbit. In contrast, DEX refers to a method where individuals trade directly with each other. The exchange does not hold your assets; instead, you manage your private keys directly. There’s a long-standing saying in the crypto community: if it’s not your private key, it’s not really your coin. That’s the core principle of DEXs.

There are various types of DEXs. The most commonly used are AMM-based platforms like Uniswap or PancakeSwap, where users deposit assets into liquidity pools, and smart contracts automatically set prices and handle trades. There are other types as well, such as on-chain order books or off-chain order books, which are a bit more complex but offer advantages in speed and cost.

The reason DEXs appeared can be understood by looking at the problems with centralized exchanges. These days, hacking incidents are happening all the time. Last year alone, over $2.1 billion was stolen from exchange hacks. Centralized exchanges tend to be easy targets because they gather all assets in one place. Also, once you entrust your assets to an exchange, you lose actual control. If the exchange encounters issues or halts trading, you can’t access your funds. Thinking about what CEX means again, it ultimately means trusting and entrusting a central authority.

The advantages of DEXs are truly attractive. All transactions are transparently recorded on the blockchain, so anyone can verify them. You manage your private keys directly, giving you full control. There’s no worry about hacking or exchange bankruptcy, and you can start trading immediately without identity verification. Plus, tokens not listed on centralized exchanges can be traded freely on DEXs.

However, there are also disadvantages. Low liquidity can cause losses during large trades, and if there are issues with smart contracts, it can be risky. Losing your private key means permanently losing your funds. In Korea, you can’t directly deposit or withdraw in Korean won, so you have to go through domestic exchanges, which can be inconvenient.

Recently, PancakeSwap dominates the DEX market. Thanks to the low fees and fast speeds on the BSC network, it’s very popular. Ecosystems like Metoora and Lyidium on Solana are also growing quickly and are worth watching.

For beginners, it’s recommended to start with tokens like PancakeSwap’s CAKE or Uniswap’s UNI, as these are well-verified projects in the market. Before investing, be sure to check the whitepaper and audit reports. It’s risky to invest blindly just because of high returns.

When using DEXs, there are some important things to remember. First, always verify the official contract address of tokens to avoid scams. Second, never store seed phrases online; write them down on paper and keep them in a safe place. It’s best to test with small amounts first before trading larger sums. Third, set an appropriate slippage tolerance—usually around 0.5–1%, but for highly volatile tokens, it can go up to 2–3%. Fourth, choose networks with lower gas fees instead of expensive ones. Fifth, when using cross-chain bridges, double-check network addresses multiple times; sending to the wrong address is almost unrecoverable.

Understanding what CEX means and knowing the difference with DEXs will elevate your investment skills. DEXs offer high freedom but also come with greater responsibility, providing a great way to experience true financial sovereignty. Learn step by step and start with small trades.