What is the CoreCLR?

Purpose:

• This once again tests whether a developer has kept abreast with the evolution of the .Net framework.
• A knowledge of the design goals surrounding CoreCLR and how it differs to the normal CLR will certainly show passion

Potential Answer:
Similar answer to the CLR will do.

The key differentiation here is that .Net Core code runs on a different runtime to the Full.Net (CLR).

A really good indication would be if the candidate starts talking about the realtionship between CoreCLR and CoreFX and how the CoreCLR tries to minimize as much the class libraries that is implemented to make it more portable and agile.