IEO might be similar to ICO, however, it is less risky.
Personally, now, I am a member IEO run by Lancer.Network on Lukki Launchpad.
http://lukki.ioThis project is an IEO in an exchange that I have never heard of, in addition to the volume of only 17 million dollars, and has not been confirmed if it is a real volume. I think it is very risky to join the IEO of such exchange
Many people are not familiar with the exchange, it is better to choose a good and certain IEO like in Binance. Bitforex and Huobi are very safe risks.