11. A computer-implemented method for running a business application comprising: rendering an activity browser configured to permit a user to browse a plurality of activities associated with a business from one singular control center; providing a memory in which at least one context having a structure defined by a context template is stored, the context template including meta-data describing the context and representing a meta-model of a business situation including one or more of: an activity-centric model, a collaborative activities model, and an object-centric model; displaying the at least one context at said activity browser in one or more of an activity-centric model in a first view, a collaborative activities model in a second view, and an object-centric model in a third view, each of the views displayed in an information panel accessible via the control center; enabling an interface between the context and a service associated with the context, the interface providing exchange of data between a parameter of the context and a service associated with the context; outputting data from the context at a user interface; displaying at least one parameter selection control configured to permit a user to select a plurality of parameter types, said plurality of parameter types including purchase orders, worklist information, pending actions representing information about pending workflow processes, task calendar including a plan and a schedule of work, trigger information that initiated a certain activity, and status information corresponding to the business situation; and providing at least one identifier corresponding to a duplicate invoice situation, the at least one identifier, when actuated, configured to allow a display of one or more invoices for comparison.
11. A computer-implemented method for running a business application comprising: rendering an activity browser configured to permit a user to browse a plurality of activities associated with a business from one singular control center; providing a memory in which at least one context having a structure defined by a context template is stored, the context template including meta-data describing the context and representing a meta-model of a business situation including one or more of: an activity-centric model, a collaborative activities model, and an object-centric model; displaying the at least one context at said activity browser in one or more of an activity-centric model in a first view, a collaborative activities model in a second view, and an object-centric model in a third view, each of the views displayed in an information panel accessible via the control center; enabling an interface between the context and a service associated with the context, the interface providing exchange of data between a parameter of the context and a service associated with the context; outputting data from the context at a user interface; displaying at least one parameter selection control configured to permit a user to select a plurality of parameter types, said plurality of parameter types including purchase orders, worklist information, pending actions representing information about pending workflow processes, task calendar including a plan and a schedule of work, trigger information that initiated a certain activity, and status information corresponding to the business situation; and providing at least one identifier corresponding to a duplicate invoice situation, the at least one identifier, when actuated, configured to allow a display of one or more invoices for comparison. 12. The computer-implemented method of claim 11 further comprising: selecting from the context data depending on a selection criterion and outputting the selected data.