Wanted to make everyone aware of a valuable resource that has just recently been updated. They are Inforgraphics/Posters that cover the key messaging concepts for Azure, including Overview, Security, Scalability, Identity and Access, and Infrastructure Services.
I would encourage you to utilize these for training yourself and your internal staff, as well as for customer education. They provide great visual aids for helping understand the complex architectures that make up Azure and its associated technologies. You can zoom into details, download, or print (26X30"/66.04X99.06cm).