Being doing some work with Keras recently, which is a fantastic platform for making it simple to build out neural networks. Even better, it abstracts the underlying framework and allows you to use the one of your choice such as Tensorflow or CNTK without having to change your Keras code. With a simple config change you can switch the backend.
I also love using Azure Notebooks for quick and seamless prototyping and getting started. Keras is supported here and, by default, seems to use Tensorflow as the backend. Now, I wanted to see if I could switch that to CNTK - turns out it is pretty simple. Assuming you are using a python notebook you can run this before importing Keras:
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