Here is a video that you can forward to .NET engineers in your company. It will be greatly useful for them.



This video describes how Microsoft implements deferred execution in LINQ.



https://www.youtube.com/watch?v=oZErvocWFL8



The source code for this video can be found at my bit bucket repository at https://bitbucket.org/Sathyaish/pluralsight



There's also a Wiki where there are more useful links to learn LINQ query operators and they can also ask me programming questions: https://bitbucket.org/Sathyaish/pluralsight/wiki/Home