To fully isolate web app components in Azure, which architecture should NOT be proposed?

Choosing an architecture that enables full isolation of web app components in Azure is crucial for ensuring security, scalability, and maintainability.

In this context, a direct connect architecture is not suitable for achieving full isolation because it typically involves connecting on-premises networks directly to cloud environments without necessary segmentation or isolation. This architecture may expose web app components to greater risk since it can lead to a less secure environment where various systems can communicate without the protective barriers that are often needed for sensitive applications.

In contrast, a multi-tier architecture allows for separation of presentation, application, and database layers, providing each with its own dedicated resources and security controls. A microservices architecture promotes the deployment of individual components independently, which enhances isolation and scalability. Similarly, an integrated serverless architecture enables components to run in isolated functions, leveraging cloud services while reinforcing separation between elements.

By selecting an architecture that emphasizes isolation, organizations can better protect their web applications from security threats and ensure that individual components operate independently, reducing potential points of failure.