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Hello Kiryl,
Thank you for your feedback and for providing the link to the Azure architecture guide.
You are correct that Azure Front Door supports SSL offloading and has load balancing features. However, Azure Front Door is primarily designed for global load balancing, optimizing web traffic by caching and accelerating content delivery across multiple regions. In this specific case study, Contoso Limited requires a load balancer that supports SSL termination within a single region to manage traffic for their web and application tiers.
Referring to the decision tree for load balancing in Azure (from the link you provided), Azure Application Gateway is the most suitable choice for several reasons:
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Regional Focus: The case study does not require global or multi-regional load balancing, which is where Azure Front Door excels. Contoso Limited’s need is focused on internal scaling and high availability within a single region.
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SSL Termination: Azure Application Gateway natively supports SSL termination, allowing it to handle SSL decryption and reduce the load on web servers. This feature aligns perfectly with the case study’s requirement.
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Layer 7 Load Balancing: Azure Application Gateway operates at Layer 7 (application layer) of the OSI model, providing advanced routing capabilities, Web Application Firewall (WAF), and URL-based routing, which are beneficial for managing web applications.
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Autoscaling and High Availability: Azure Application Gateway supports autoscaling, ensuring that the web and application tiers can handle high demand by automatically increasing the number of virtual machines, thus fulfilling the case study’s scalability requirement.
While Azure Front Door includes load balancing features and additional capabilities, it is more suited for global traffic management. For Contoso Limited’s scenario, which involves regional traffic management with SSL termination, Azure Application Gateway is the correct and most efficient choice. This alignment with the decision tree and the specific requirements of the case study makes Azure Application Gateway the optimal solution.
Thank you once again for your valuable insights. Please feel free to reach out if you need further assistance.
Regards,
Nikee @ Tutorials Dojo
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