
C# 7 and .NET Core: Modern Cross-Platform Development

.NET Core is made up of several pieces, which are as follows:
Language compilers: These turn your source code (written with languages such as C#, F#, Visual Basic, and others) into intermediate language (IL) code stored in assemblies (applications and class libraries). C# 6 introduced a completely rewritten compiler known as Roslyn.
Common Language Runtime (CoreCLR): The runtime loads assemblies, compiles the IL code stored in them into native code instructions for your computer's CPU, and executes the code within an environment that manages resources such as threads and memory.
Base Class Libraries and NuGet packages (CoreFX): These are prebuilt assemblies of types for performing common tasks when building applications. You can use them to quickly build anything you want, rather like combining LEGO™ pieces. .NET Core 1.0 and 1.1 are based on .NET Standard 1.6, which is a superset of all previous versions of .NET Standard.
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