I learned this work in-house, building and running a company's website and search at Video Conversion Experts in Chandler, then running my own web studio in Gilbert, then doing SEO on national insurance and government-program sites at Clearlink in Phoenix. Independent since August 2020. The lesson from all of it: engagements die in the layers between the thinking and the doing.
So there are no layers here. I build the site, I set up and run the Google profile, I handle the listings, the reviews and the ads, and I answer when something breaks. For a local business, one person who knows the whole picture is the right unit of delivery.