Deploy an ARM Template with Verification and Cleanup: Step‑by‑Step Guidance

I need to deploy a simple ARM template that creates a storage account and an App Service. Using Azure CLI, what are the exact commands, prerequisites, and numbered steps to create the resource group, deploy the template, verify that the deployment succeeded, and then clean up the resources? How should I handle errors, use verbose or debug output, and rollback if the deployment fails? Please include concrete examples, verification steps (e.g., checking ProvisioningState), and cleanup commands. Also explain how to set the correct location for the resource group and why it matters.