Network function virtualization

For example, section 1.3 is summarized cloud concepts and connectivity options.

Things like a network functions virtualization, NFV, a virtual private cloud, a VPC.

What are network security groups? What are network security lists? What are cloud gateways? What are internet gateways? What's a NAT gateway? These are all cloud-based technologies.

Some of them apply to both cloud and non-cloud technologies.