Designed and implemented a secure and scalable network architecture in Azure to support enterprise applications. The architecture leveraged Azure Virtual Networks (VNet) with subnet segmentation to isolate different application tiers, and incorporated Azure Load Balancers and Application Gateways for high availability and traffic management. Security was enhanced through Network Security Groups (NSGs), Azure Firewall, and Azure DDoS Protection to safeguard against external threats. Additionally, employed Azure Private Link and Service Endpoints to securely connect to Azure services, ensuring data remained within the trusted network boundaries. The architecture was designed for scalability, allowing seamless scaling of resources to meet changing demands while maintaining optimal performance and security.