Field service
Dispatch, job tickets, and the status a customer asks for while a technician is still on site.
A field team often runs on a dispatch board, a text thread, and a form filled in after the visit. The useful system is the one the technician already opens: the ticket, the parts, and the note the office can see without a second call.
Customers ask where the visit stands. A portal can answer that from the same ticket, instead of a coordinator rewriting it into email.