About This Architecture

Multi-AZ SaaS platform on Azure with Front Door, WAF, and Application Gateway routing traffic across two availability zones running Next.js frontend, Node.js APIs, and PostgreSQL databases. The architecture spans VNets with segregated subnets for presentation, application, data, and integration layers, ensuring network isolation and security. PostgreSQL replication, Blob Storage redundancy, and VM Scale Sets provide high availability and disaster recovery across AZs. Leverage API Management for API governance, Microsoft Entra External ID for customer identity, and Service Bus with Logic Apps for event-driven workflows. Fork this diagram on Diagrams.so to customize resource names, add additional regions, or integrate your own third-party services like Stripe, Postmark, and LLM endpoints. Consider adding Azure Traffic Manager for multi-region failover or Azure SQL Managed Instance for advanced database features.

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How do I design a highly available multi-AZ SaaS platform on Azure with automatic failover and disaster recovery?

This diagram shows a production SaaS architecture using Azure Front Door and WAF for global entry, Application Gateway for load balancing across two AZs, PostgreSQL replication for data redundancy, and Service Bus with Logic Apps for event-driven workflows. VM Scale Sets auto-scale application replicas, while Azure Monitor and Sentinel provide observability and security monitoring across both zone