The CloudHealth platform does not store any data in the customer's Azure tenant.
On Azure's side, in certain configurations, metrics will be stored within a storage account but that data will remain with Azure.
CloudHealth will read from that data (via the "Read-Only" permissions), so that it can be utilized to create datasets viewable within the platform.
The platform will collect the hourly metrics in the tables from the past 7 days, aggregate them into weekly metrics, and then turn these weekly metrics into monthly metrics.