Abstract In this arti le an approa h for the integration of Session Initiation Proto ol (SIP)-based session and ontext management, the Virtual

Organization on epts from the Grid ommunity and SOAP-based servi e in-

tera tions is presented. The te hni al approa h is motivated by two simplied

s enarios that have been realized in the frame of a large s ale European ol-

laborative resear h proje t alled Akogrimo. Furthermore, dierent ontext

gathering approa hes are dis ussed and how in su h a distributed appli ation

setting a potential adaptation to these dierent ontexts, su h as lo ation or

devi e apabilities an be used for realizing mobility-aware servi e-oriented