¿Cómo seleccionar un AP WiFi de UniFi? y ¿Cuántos AP usar?"

What type of radio do we need: Indoor, Outdoor, or Waterproof? What is the radiation pattern? What is the coverage range in meters of a WiFi access point (AP)? What is the maximum concurrent WiFi client density that an AP can support? Which AP is most appropriate for a business vertical? How many APs and locations are needed? Examples: Hotel and Office Power over Ethernet (PoE): Considerations