AZ-900 Describe Azure architecture and services Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  Step 1: Create an App Service plan, Step 2: Create a web app, Step 3: Deploy application code, Step 4: Add a custom domain, Step 5: Configure SSL binding

  Why this is correct

  This sequence is correct because an App Service plan must first provide the compute capacity, pricing tier, and scaling settings that host the web app; only after that plan exists can the web app be provisioned as a resource within it. Application code is then deployed via Git, ZIP, or other methods into the existing web app, making the app functional. Adding a custom domain requires a running app for DNS verification (e.g., CNAME or A record), and SSL binding must be configured after the domain is assigned so a certificate can be matched to that hostname.

• ✗

  Step 1: Create a web app, Step 2: Create an App Service plan, Step 3: Deploy application code, Step 4: Add a custom domain, Step 5: Configure SSL binding

  Why it's wrong here

  This order is invalid because the Azure App Service web app resource cannot be created without first establishing an App Service plan; the plan is a hard prerequisite that defines the region, VM size, and tier for the app. If you attempt to create a web app in the portal, CLI, or ARM template, you must either select an existing plan or create a new one in the same operation. Therefore, placing web-app creation before the plan violates Azure's underlying resource dependency model and will fail.

• ✗

  Step 1: Create an App Service plan, Step 2: Deploy application code, Step 3: Create a web app, Step 4: Add a custom domain, Step 5: Configure SSL binding

  Why it's wrong here

  This order is incorrect because deploying code requires the web app to exist as a deployment target; the App Service plan is only a container of compute resources and offers no endpoint to accept application files. Without a web app resource, there is no URL, runtime stack, or deployment credentials to receive code pushed from Git, ZIP, or CI/CD pipelines. The web app must be created before any deployment can occur, so this sequence puts the deployment before its necessary dependency.

• ✗

  Step 1: Create an App Service plan, Step 2: Create a web app, Step 3: Add a custom domain, Step 4: Deploy application code, Step 5: Configure SSL binding

  Why it's wrong here

  This order is incorrect because it's best practice to deploy code before adding a custom domain to ensure the app is running and can be tested. Also, SSL binding requires the domain to be already added, but deploying after domain addition may complicate verification.

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