Managed code is great, but sometimes .NET code must call native code, such as Windows API DLLs or COM components. The course explores most options for interop, from P/Invoke, to COM and even C++/CLI. Best practices are spread throughout the course. A deeper understanding of COM mechanisms provides a better experience and the ability to solve issues should they arise. This course should be helpful for any .NET developer that must introp with native code (and vice versa).