Mar 24, 2019 12:48 PM|mgebhard|LINK
So can anyone here help me in telling the true reasons for asp.net core being fast and cross-platform?
Simply it is designed to be fast and cross platform and the enhancements continue with each release. While your points are correct for ASP.NET Core there is much more that goes into .NET Core performance enhancements.
ASP.NET Core 2.2 enhancements.