A Google Business Profile is the public card for the shop: category, description, services, posts, and reviews. Frontage is a desk for that card.
A practical loop
1. Suggest keywords for the category, description, services, and a post.
2. Approve only the lines that are true.
3. Apply them in demo mode locally, or to Google after API access is approved.
4. Roll back if a later edit was a mistake.
Review replies follow the same idea. Sensitive reviews stay as drafts. Low-risk 4 and 5 star replies can publish when you turn that rule on.
Frontage is not a Google product. Profile changes in the demo stay inside Frontage until a live connection exists.