Where does the data live when you build a custom real estate portfolio reporting tool like this?

The underlying data lives in Supabase, described as a secure, full-stack database platform with a lot of built-in functionality and security. The presenter recommends Supabase for anyone building AI tools, noting it's relatively easy to navigate and works well for keeping users 'close to their data' — a core design principle for the tool being demoed, which uses table views similar to Excel so users can trace any visualization back to its source data.