Cost History by Tags
This report shows week-wise cost history as a bar chart for values under the tags for the last 90 days. The default value of the tag for this report under this dashboard is always the first value in the drop-down list. This report can be empty if the resource usage data is not available for the default tag.
This report is located here:
Public Cloud Reports > Azure > Cost History by Tags
Note:
This cost report does not take into consideration the discounts that Microsoft might be offering for a given tenant/subscription.