Hi@akhtar,
An App Service plan defines a set of computing resources for a web app to run. These computing resources are analogous to the server farm in conventional web hosting. You can use the below command to create an App Service plan in Azure.
$ az appservice plan create -g MyResourceGroup -n MyPlan
Hope this helps!
Enroll in our Azure architect certification course to learn more about App Service Plan in Azure.
Thanks!