ASP.NET Core 2 takes advantage of all the improvements to .NET Core 2, if that is what you choose to run it on. It will also run on .NET Framework 4.7, but it's best to run it on .NET Core if you can. With the increase in scope and support of .NET Core 2, this should be less of a problem than it was previously.
.NET Core 2 includes a new metapackage, so you only need to reference one NuGet item to get all the things. However, it is still composed of individual packages, if you want to pick and choose. They haven't reverted to the bad old days of having one huge System.Web assembly. A new package-trimming feature ensures that if you don't use a package, then its binaries won't be included in your deployment, even ...
