One source of truth
Jobs, stock, or bookings live in one place.
Product
Notion is frequently used as a client portal and internal wiki with shared pages and databases.
Notion replaces scattered spreadsheets with one system for Client Portals, so status is visible and handoffs are fewer.
The public site is the brochure. The product is the daily tool your coordinators keep open.
Design rules
Jobs, stock, or bookings live in one place.
Field staff and managers do not share the same clutter.
Nothing is trapped if you need a report tonight.