To complete the exercise "Explore interacting with Azure" in the module "Describe the core architectural components of Azure," you will need to use an Azure subscription, as the Microsoft Learn sandboxes are no longer available. The sandbox environments were previously free environments for exploring Azure but are no longer offered. Therefore, you will need to sign up for an Azure subscription to access the Cloud Shell and complete the exercises.
If you do not have an Azure subscription, you can sign up for a free 30-day trial or a pay-as-you-go subscription to gain access to the necessary resources for your training.
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