My Project status badge says I am overspending relative to my spend plan/budget. How can I find spend details for my project to diagnose what is causing the overspend?

Click on the Project Name in the Project card. You will be taken to the Project Details view. Then click on the "Financials" tab. You will be able to see both high-level and fine-grained (at the cloud service level) financial data that can be used to diagnose the issue and make corrections to bring your Project's spend back on track.