Hi Sanjay Chhabria,
Thank you for reaching out to us on the Microsoft Q&A forum.
Consider deploying in different locations instead of "east us" as specified in the exercise. The issue might be due to the service being unavailable in that region or high demand for the services you've requested. Changing your deployment location to another region should resolve this issue.
Note: With an Azure free subscription, you get access to a variety of services with limited quotas.
Please don't hesitate to reach out to us if you have any other queries.
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