For Business perspective:
Small businesses based on few employees these days also need tracking of employee’s activities in working hours on the company’s owned computers such as windows and MAC. If you have one or two kinds of devices of different OS version then you can use a single license for each OS PC. You can use your licenses one by one on your devices running with several operating systems. On the other hand, you can change your license OS at any point in time with the same subscription rather than to get a new one every single time. This will help out small business owners to get a couple of subscriptions to monitor employee’s laptop desktop devices of different OS versions. However, large business organizations based on hundreds of employees require a number of licenses to spy on employees' activities at the same time. In case, you want to monitor a few devices then you can purchase a single license to use it back and forth on suspicious employees.