Andy Brownsword saves some cash:
A consumption based App Service Plan in Azure provides us with a pay-as-you-go model for Function usage. This can help reduce spend from Premium plans where those plans exceed the requirements of the function, for example low volume or intermittent work.
Unfortunately you can’t move a Premium plan to Consumption based via the portal. Instead we’ll demonstrate how to use PowerShell to achieve this.
Read on for the code, as well as a bit more information on the Consumption tier..