ASP.net runs on IIS or HTTP.SYS and is hardly optimized. ASP.Net core has an own HTTP server (kestrel) and has had numerous optimizations , including to the .NE

ASP.net runs on IIS or HTTP.SYS and is hardly optimized. ASP.Net core has an own HTTP server (kestrel) and has had numerous optimizations , including to the .NET Core framework and C# (for instance Span<T>)