Recently, many newcomers have been asking me about the differences between ICO, IEO, and IDO. I’ve noticed that many people still find these three issuance models a bit confusing. Actually, although these three are all ways for projects to raise funds, their methods are completely different, and the risks vary greatly. So today, let’s talk about this topic.

First, let’s discuss ICO, which is the earliest fundraising model. Its concept is similar to an IPO in the stock market, except it raises digital assets. The project team directly issues tokens on their website, and investors send Bitcoin, Ethereum, or other assets to the designated address of the project. It sounds very free, right? But the problem is also obvious—there’s basically no regulation. In the early ICO market, chaos was rampant, with all kinds of scam projects and worthless tokens flying everywhere. Investors were basically gambling with their lives.

Later, exchanges started to get involved, leading to the emergence of the IEO model. Large centralized exchanges (CEXs) act as intermediaries. The project team hands over tokens to the exchange, which is responsible for review, compliance, and liquidity support after listing. The advantage of this approach is that exchanges screen projects in advance, making the risk relatively lower. But the cost is that project teams have to pay fees to the exchange, and the exchange also gains more control over the project.

As DeFi rose, the IDO model was born. This method is entirely conducted on decentralized exchanges (DEXs). Project teams don’t need any approval from centralized institutions; they can raise funds simply by creating liquidity pools on DEXs. It sounds very cool and truly aligns with the spirit of blockchain—low participation barriers and fast transactions. But on the flip side, because there’s no review process, various “carpet” projects and high-risk investments can easily appear. Compared to ICOs, IDOs are the most decentralized, but risk management entirely depends on investors themselves.

To briefly summarize the core differences among these three: ICOs are run by the projects themselves, fully decentralized but unregulated; IEOs are led by exchanges, with higher trust but less freedom; IDOs are conducted on DEXs, most aligned with blockchain principles but with the hardest risk control. From the wild growth of ICOs, to the order introduced by IEOs, and then to the pursuit of decentralization in IDOs, what this really reflects is the ongoing balancing act between efficiency, trust, and decentralization in the market.

For investors, understanding these differences is really important. You need to choose based on your risk tolerance and your understanding of the project. If you’re a beginner, IEO might be more suitable; if you’re familiar with on-chain operations, IDO could offer more opportunities. The most crucial thing is to do your own research—no matter which model it is, never follow the crowd blindly.