AZ-204 Question #168: Real Exam Question with Answer & Explanation

Question

A consultant needs to deploy Web Applications to the Azure Web App service for 4 customers. Each customer needs to have the application running on a separate individual instance. The following key requirements are also in place: - Ability to automatically scale on demand - Ability to use deployment slots to test staging environments - All Azure resources should be located in a separate isolated network - Costs need to be minimized How many instances would you keep running for the requirement?

Options

• A16
• B8
• C12
• D4

Explanation

To meet the requirements of 4 customers each needing a separate application instance, auto-scaling, deployment slots, and isolated networking with minimized costs, the most efficient approach is to deploy each customer's application to a separate App Service Plan within an App Service Environment (ASE) v3, with each plan running at its minimum of one instance.

Common mistakes.

• A. Running 16 instances (4 instances per customer) would significantly increase costs without a clear justification from the "minimized costs" requirement and the "separate individual instance" phrasing.
• B. Running 8 instances (2 instances per customer) would increase costs unnecessarily if 1 instance per customer is sufficient to meet "separate individual instance" and "minimized costs."
• C. Running 12 instances (3 instances per customer) would similarly increase costs beyond the "minimized costs" requirement when a single instance per customer's dedicated plan is sufficient as a starting point.

Concept tested. Azure App Service Environment sizing and cost optimization

Reference. https://learn.microsoft.com/en-us/azure/app-service/environment/overview

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