Hosting functions
Azure Functions, once deployed, are hosted on the App Service infrastructure. In an App Service, as you saw in the previous examples, only the compute and other resources that are used are accumulated toward your bill. In addition, Azure Functions, in a consumption plan, are active only when they are triggered by one of the events that has been configured; hence, Azure Functions can be extremely cost-effective in mission critical integration scenarios. Function resources can also be scaled out and down, depending on the load they are handling.
The second plan that's available for functions is the premium plan. In the premium plan, you have the option to set up always running functions to avoid cold starts, as well as unlimited ...
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