The ability to view portal traffic will help admins get a sense of how many users are visiting their portal, as well as knowing when they need to purchase additional capacity so that their performance remains smooth. Currently, there is no OOB way for admins to measure portal traffic if their organization has not purchased capacity add-ons yet. The only way to see this is if the organization has purchased capacity Capacity add-ons for Power Apps and Power Automate - Power Platform | Microsoft Docs , but this does not apply to all organizations that use portals. Please consider adding this functionality for admins who have not purchased capacity.
