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I am trying to do the following exercise

https://learn.microsoft.com/en-us/training/modules/introduction-to-azure-app-service/7-create-html-web-app

Am I unable to run

az webapp up -g $resourceGroup -n $appName --html

???

I am using the concierge learn resource group. I've switched to the concierge directory/subscription

Do I need to use a paid subscription to make app service apps?