My IT business is managed services for companies who are under 50 employees. It is deployed for offices, office buildings, and office suites, but probably no more than a small office building. Typically, an office suite could be as little as one or two access points or as big as 10 access points.
This solution helps an MSP, like me, manage my time better because I have more visibility and the ability to control things from a distance.
I use the WAX610 access points. It varies with the router, sometimes it is a BR100 router and a lot of times it is an SXK80.