STO is the real deal, IEO is just a copy of ICO but with a guaranteed that the coin/token of the project will be listed on an exchange, the hype that is around IEO will end soon anyway only the successful IEO is the one running on Binance, the real deal is STO which will bring us close to real projects and real investors that are looking to do real investing in shares, not useless tokens/coins that have no value.