What is an Azure App Service Plan and what does it do?
A web app in Azure actually consists of two things, an App Service Plan and an App Service, what is not always clear is why they are two things and what the purpose of the plan part is. The App Service is fairly easy to understand, it’s the actual instance of your web application, it’s where you deploy your code, set up SSL certificates, connection strings etc. The App Service Plan is a little less clear, when you create your app you select a plan and this determines what you pay, but it’s not entirely obvious what it is for, why it’s a separate things, or what you can do with it.