This guide provides a foundation for securing network infrastructure using Palo Alto Networks® VMSeries virtualized next generation firewalls within the Amazon Web Services (AWS) public cloud. For an organization with a desire to move to public cloud infrastructure, the next question is often “How do I secure my applications in a public cloud?” This guide provides an overview of AWS components and how they can be used to build a scalable and secure public cloud infrastructure on AWS using the VM-Series. The architectures begin with a single virtual private cloud suitable for organizations getting started and scales to thousands to meet any size organization’s operational requirements.