This open-source utility on the Analysis Services Analysis Services Git repo enables automatic, customizable scaling for AAS instances based on QPU consumption. It can be used to ensure adequate resource availability for an instance by automatically scaling tier up and down, as well as adding and removing query replicas, as workload requires. Its parameters allow full customization of the AutoScale behavior to ensure the instance operates within required tier and replica count ranges.
The PowerShell deployment script is internally documented and self-explanatory, and a ReadMe.txt accompanying the script describes its usage and infrastructure.