

They have the management aspect of large environments down to a tee. Apart from costs it does not really matter if your domain consists of ten, thousand or more systems. The tools to manage those systems centralized by core systems is the same set for all sizes so to speak.
That can be on one campus, across multiple cities and locations. It’s quite frankly IMO the foundation on which the success of Windows in the corporate world is built. Standardized deployment of settings across all company systems saves administrators time which can be used for other tasks instead of micromanaging clients.
I have yet to see a similar solution for Linux clients that works the same way.
Do you have requirements for the WiFi Standard?
Do you want to build up a new system or adding to your current setup?
For the price point you could look into the AVM Fritz Ecosystem. Their Mesh solution is quite hassle free and for 200€ you could get WiFi 5 capable devices on the used market.
Not sure how well they work with other brands, so you might want to invest in a FritzBox and FritzRepeater (should be in the budget used).
Anything above WiFi 5 could be out of your price range, especially new.
Ubiquity APs with WiFi 5 could be in your budget, even new. Look into the AP HD. You will need a controller installation though, weither on your desktop or on a NAS, Server. You do NOT need to buy an appliance from them for management. They do not make it clear on their website.