Azure multi-tier application architecture with Front Door, WAF, and CDN protecting a VNet-hosted presentation and API tier. External and internal users route through Azure Front Door with Web Application Firewall policies, while App Services for UI and API communicate via API Management, backed by Azure SQL Database, Redis cache, and Function Apps for async data integration. Identity flows through Azure Active Directory and Okta federation, with Logic Apps orchestrating on-premises systems like Oracle Fusion and CIS, while Application Insights and Log Analytics provide observability across all tiers. This architecture demonstrates Azure best practices for security, scalability, and hybrid integration in enterprise environments. Fork this diagram on Diagrams.so to customize subnets, add additional services, or adapt for your specific compliance and performance requirements.