About This Architecture

Multi-tenant SaaS architecture on Azure using private endpoints to isolate three App Services from public internet exposure while maintaining centralized WAF protection. Users connect through Azure Front Door with WAF policies, routing to App Service 1, App Service 2, and App Service 3, each with system-assigned managed identities for secure data access. Data layer components—Azure SQL Server with Entra ID authentication, Elastic Pool for per-customer databases, Storage Accounts for customer files and App Insights archives—connect exclusively via private endpoints in a dedicated subnet, eliminating public IP exposure. Application Insights instances feed telemetry to Log Analytics Workspace, which archives to protected storage, while Azure Key Vault with RBAC and managed identity integration secures all credentials. This architecture demonstrates zero-trust network segmentation, least-privilege identity access, and compliance-ready isolation for regulated multi-tenant workloads. Fork and customize this diagram on Diagrams.so to adapt subnet ranges, add additional App Services, or modify monitoring retention policies for your tenant scale.

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How do I design a secure multi-tenant SaaS platform on Azure that isolates customer data with private endpoints and eliminates public IP exposure?

This diagram shows a zero-trust architecture where Azure Front Door provides centralized WAF protection, routing to three App Services with system-assigned managed identities. All data layer components—Azure SQL Server, Storage Accounts, and Key Vault—connect exclusively via private endpoints in an isolated subnet, using Entra ID authentication and RBAC to enforce least-privilege access without ex