IDO is a type of fundraising method that is used to launch new cryptocurrencies. Unlike other methods of raising funds for a project, such as an Initial Coin Offering (ICO), IDO involves listing your tokens directly on a decentralized exchange (DEX). This allows you to reach a wider audience of potential investors and gives you direct access to the cryptocurrency market. There are a number of different DEXs to choose from, so it is important to do your research and find the one that is right for you.