Secure your cloud environment without compromising availability. This guide is the definitive, hands-on resource for architecting High Availability (HA) deployments of Palo Alto Networks on Microsoft Azure. Deploying Next-Generation Firewalls (NGFWs) in a public cloud environment like Azure presents unique challenges in maintaining both security posture and service continuity . Whether you are a Cloud Engineer, Network Engineer, Security Architect, or DevOps Professional, this book serves as your essential guide for successfully deploying and maintaining Palo Alto Networks HA clusters within the Microsoft Azure environment. In this practical, deep-dive guide, you will learn to: Design HA Architecture: Understand and implement the core deployment models (Active/Active vs. Active/Passive) for Palo Alto VM-Series firewalls on Azure. - Implement Azure Networking: Configure Azure Internal Load Balancers (ILB) , Azure External Load Balancers (ELB) and User-Defined Routes (UDR) , VNET Peering and Network Watcher for optimized traffic handling and health checks. - Automate Synchronization: Ensure complete configuration sync and session persistence across your cluster nodes for stateful traffic. - Optimize Failover: Achieve minimal Recovery Time Objective (RTO) by implementing Heartbeat monitoring and robust failover mechanisms. This book is an indispensable resource for Cloud Architects, Network Security Engineers, Palo Alto Engineers and Senior Azure Administrators ready to build truly resilient cloud security infrastructure. Table of Contents: All resources and prerequisites - Reference Network Diagram - Create Resource Group and Virtual Network - Create primary and secondary Palo Alto appliances - Configure Interfaces, zones, VR, management profile - Configure NAT and security policies - NSG for WAN interface and assign Public IP - Provision and configure internal Load Balancer - Provision and configure external Load Balancer - Create test VMs, UDR and enable VNET Peering - Configure Inbound NAT end test RDP from outside - Configure East-West traffic - Active/Passive cluster with Palo HA2 About the author: Max Benana is an independent Network and Security Architect and a certified expert ( CCIE Enterprise Infrastructure No. 68532 ). With an academic background - a Master's degree in Network and Cybersecurity architect from Telecom Paris. Max designs and deploys secure, high-performance architectures across Private Cloud (Datacenter), Public Cloud, and Campus environments for more than 10 years. He possesses deep, multi-vendor expertise in solutions from Cisco (Catalyst, Nexus, ASA, DNAC, ISE), Palo Alto, Fortinet, Checkpoint, Aruba, Meraki, Velocloud, ISE, F5, and Zscaler . Max is committed to continuous validation, holding key certifications including CCIE Enterprise Infrastructure, PCNSE, NSE4, Security+, AZ-900, and ITIL .