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.
A business is the organized effort of individuals to produce and sell, for a profit, the goods and services that satisfy society's needs. There are three key characteristics that must be met to have a business: