Hosted refers to having the minimal equipment in your premises that is required for video surveillance capturing and having the footage recording function under the care of CNZ. You do not need to own any recorder or manage it. All you need to have is a PC for viewing the footage when you wish to do so.
You pay for the cameras, equipment for transmitting videos to CNZ, and labour for installation only plus entering into a 36 month recording agreement with CNZ. You have the option of leasing instead of paying upfront for cameras and transmission equipment.