The storage bar turned red, leadership asked why we are paying for more, and I do not have an answer I can defend

SharePoint tenant storage nears quota. The admin sees which sites are large but cannot distinguish version bloat, abandoned projects, or required content. Leadership demands justification before approving more storage spend.

This is a researched blocker from SharePoint & Teams Admins. Below is the solution path — from understanding it to a paste-ready asset.