Interesting how it goes from `projectbaseline.com` to `baseline.google.com` after you complete the initial questionnaire, but the site continues to look the sam

Interesting how it goes from `projectbaseline.com` to `baseline.google.com` after you complete the initial questionnaire, but the site continues to look the same. Why not just have one consistent domain then? Obviously it doesn't matter as long as it works, and it was built extremely quickly, though it does make me wonder.