From PowerPoint Diagrams of Azure Concepts & Architecture:
While working with multiple Enterprise teams as an Azure Consultant, I repeatedly use, modify and add to a deck of PowerPoint slides that I customize for communicating Azure concepts to team members in various departments. Some of the slides are combinations of elements and/or concepts from all the Diagram Sources below. Links are provided for original diagrams where possible.
Diagram Sources:

3. Security – 2 slides

Download S2S P2S Express Route PPT deck

Get the Other PowerPoint Diagram Decks in this Series:

1. Governance – 3 slides
2. Hub and Spoke Network – 7 slides
3. Security 
5. DevTest Labs – 4 slides
6. Tools – 11 slides
7. Nginx – 6 slides
8. Miscellaneous – 4 slides
9. Icon Sets – 6 slides