Their job: making sure the customer looking for you finds you, and that what they find works. Your site, your Google listing, your forms: they keep the machinery running while the others make the content.

Hours (holidays included), categories, attributes, menu or services up to date. The 7:30pm customer never lands on wrong information.
Pages that load fast, clean tags, keywords in the right place: the invisible work that decides whether Google shows you or buries you.
A form that no longer sends, a dead link, a booking button down: they see it before your customers do, and fix it that same night.
The Copywriter's pages, the Designer's visuals: they are the one who installs them cleanly, without breaking the rest.
Start with the audit: 2 minutes, no credit card, a 7-page report.