Introduction to ASP.NET Core

Daniel Roth, Rick Anderson, and Shaun Luttin. Microsoft. 2017-09-03
ASP.NET Core is a cross-platform, high-performance, open-source framework for building modern, cloud-based, Internet-connected applications. With ASP.NET Core, you can:
Build web apps and services, IoT apps, and mobile backends.
Use your favorite development tools on Windows, macOS, and Linux.
Deploy to the cloud or on-premises
Run on .NET Core or .NET Framework.

[Introduction to ASP.NET Core]

Sharing Authorization Cookies between ASP.NET 4.x and ASP.NET Core 1.0

Scott Hanselman’s Blog. 2016-10-2.
ASP.NET Core 1.0 is out, as is .NET Core 1.0 and lots of folks are making great cross-platform web apps. These are Web Apps that are built on .NET Core 1.0 and run on Windows, Mac, or Linux.
However, some people don’t realize that ASP.NET Core 1.0 (that’s the web framework bit) runs on either .NET Core or .NET Framework 4.6 aka “Full Framework.”

[Sharing Authorization Cookies between ASP.NET 4.x and ASP.NET Core 1.0]