Why most of the projects these days prefer IEO over ICO? , what were the lacks in ICOs that crypto needs IEO? What should we choose as an investor? Which has lower risk?
There's no exceptions mate, both of the investments whether ico or ieo; risk cannot be avoided. Always bare in mind that new system launched like IEO isn't yet running for year so we should wait for the right time to finally say how risky it is. If a project matures within a specific timeline, and will successfully achieve good results them we're building confidence towards IEO.