Windows Service applications run in a different window station than the interactive station of the logged-on user. A window station is a secure object that contains a Clipboard, a set of global atoms, and a group of desktop objects.
That is the nature of the business is a term that means that  something happens because it is common experience for the event you  are performing or doing.
DEFINITION of 'Business'. 1. An organization or enterprising entity engaged in commercial, industrial or professional activities. A business can be a for-profit entity, such as a publicly-traded corporation, or a non-profit organization engaged in business activities, such as an agricultural cooperative. 2.