Our machine learning microservice will be a Console App (.NET Framework), just as all our other microservices have been:

Additionally, we are going to use another great open source framework, ConvNetSharp. There are two .dll files that must be referenced, and these are as follows. Without these, the machine won't be learning! You could have just as easily referenced a NuGet package, but I figured we're far enough along in the book and we know each other enough that we can mix it up a bit: