Abstract: In some embodiments, multiple heterogeneous information technology service management (ITSM) applications of different IT service partners (customers and service providers) are integrated via a service process integration grid employing a set of standard workflows and associated standard transaction types and data structures. Once a service partner's workflows and data structures have been mapped to the standard grid workflows and data structures, integration with a first and new service partners is relatively fast and convenient. Analysis of real-life ITSM applications led to the development of particular standardized workflows classified according to whether they are initiated by service provider or customer, and according to whether they do or do not include ownership-transfer transactions allowing a service partner (customer or provider) to transfer ownership of the service process to its counterpart for further action by the counterpart.