This paper addresses necessary modification and extensions of existing Grid Computing approaches in order to meet nowadays business demand. So far, Grid Computing has been used to solve large scientific problems. Consequently, the focus was more on compute power and on large input and output files that are typical for many scientific problems. Nowadays businesses have an increasing demand on computation and thus are investigating existing Grid approaches. However, the existing business requirements introduce new constraints on the design, configuration and operation of the underlying systems. Such constraints affect the availability of resources, the performance, monitoring aspects, security and isolation issues. Thus, this paper addresses the existing Grid Computing capabilities and discusses the additional demand in detail. This results in a suggestion of problem areas that must be investigated and corresponding technologies that should be used within future Business Grid syste...