Have a look at:
Session api IIS config: https://drive.google.com/file/d/0BxBEVQthCb29ek52R2pCZ3ZOX00/view?usp=sharing
These videos may assist you.
The videos were helpful. Though I did not get a solid understanding between the difference.
For example: What's the diff between:
Session Module API: Delete User
Authentication API: Delete User