3. ASP.NET Core is a free and open-
source web framework, and higher
performance than ASP.NET,[1]
developed by Microsoft and the
community.[2]
It is a modular framework that runs
on both the full .NET Framework,
on Windows, and the cross-platform
.NET Core.
4. The framework is a complete rewrite
that unites the previously separate
ASP.NET MVC and ASP.NET Web API into
a single programming model.
5.
Despite being a new framework, built on a new
web stack, it does have a high degree of
concept compatibility with ASP.NET MVC.
ASP.NET Core applications supports side by side
versioning in which different applications,
running on the same machine, can target
different versions of ASP.NET Core.
This is not possible with previous versions of
ASP.NET.
6. Release history
Version Number Release Date Support Ended Development Tool
1.0 2016-06-27 2019-06-27
Visual Studio 2015,
2017
1.1 2016-11-18 2019-06-27
Visual Studio 2015,
2017
2.0 2017-08-14 2018-10-01 Visual Studio 2017
2.1 Long-term support 2018-05-30 2021-08-21[3] Visual Studio 2017
2.2 2018-12-04[4]
Visual Studio 2017 15.9
and 2019 16.0 preview
1
3.0 in development
Visual Studio 2017 and
2019
7. Naming
Originally deemed ASP.NET vNext, the
framework was going to be called ASP.NET
5 when ready.
However, in order to avoid implying it is an
update to the existing ASP.NET framework,
Microsoft later changed the name
to ASP.NET Core at the 1.0 release.[5]
8. Features
No-compile developer experience (i.e. compilation is
continuous, so that the developer does not have to
invoke the compilation command)
Modular framework distributed as NuGet packages
Cloud-optimized runtime (optimised for the internet)
Host-agnostic via Open Web Interface for .NET (OWIN)
support[6][7] - runs in IIS or standalone
9. Features
A unified story for building web UI and web APIs (i.e.
both the same)
A cloud-ready environment-based configuration
system
A light-weight and modular HTTP request pipeline
Build and run cross-platform ASP.NET Core apps on
Windows, Mac, and Linux
Open-source and community-focused
Side-by-side app versioning when targeting .NET Core.