Yesterday, someone asked what exactly a DEX is and why we should use a DEX instead of a traditional exchange that we're familiar with. This is a very good question because understanding DEXs is very important for people who want to trade cryptocurrencies.

Simply put, a DEX is a digital asset trading platform that has no intermediary. Users can connect their own wallets to trade directly, without depositing funds into the system, and without needing to verify their identity through KYC. Therefore, a DEX is a good option for those who value privacy.

In the world of DEXs, there are many types, such as AMMs that use mathematical formulas to set prices—Uniswap and Curve are good examples—or order book models that operate like traditional stock markets, or DEX aggregators that pool liquidity from multiple sources, like 1Inch, which helps users get the best prices.

The advantages of DEXs include transparency, security, and independence. All transactions are stored on the blockchain, making it impossible for anyone to manipulate or fake prices. Additionally, DEXs are a good choice for diversifying risk in a portfolio.

However, DEXs are not perfect. They have disadvantages too, such as potentially lower liquidity compared to CEXs, risks from smart contract bugs if developers write poor code, and most importantly, if you forget your private key, there’s no way to recover it—unlike CEXs, where you can request a password reset.

For beginners, I recommend trying Uniswap first because it’s a prototype of an AMM and easy to use, or PancakeSwap, which has lower fees. If you want to try trading perpetual contracts, you can try dYdX, which is currently built on Ethereum’s layer 2, making gas fees cheaper.

What to watch out for when entering a DEX is that cryptocurrency prices are highly volatile. Be sure to research projects thoroughly before investing. Also, beware of scams—never share your private key with anyone, write it down on paper, and consider buying a hardware wallet to store your coins. Check whether the DEX has been audited by organizations like CertiK or BlockSec.

In the future, DEXs will continue to develop, becoming more secure, lowering fees, and improving user experience and interface. Additionally, there will be more integration with real-world assets, making DEXs a good option for investors seeking better returns.