Provider’s e-service, i.e. the e-service designed and offered by the provider of the service (and used by the consumer).
Provider’s business rules, i.e. the business rules that govern the design and use of the e-service at the provider’s side of the interaction. For example, when it comes to governmental e-services, this can be legal or organisational regulations.
Consumers’ business process, i.e. the internal business process in which the eservice is used by the consumer of the service.
Consumers’ internal IT system, which supports the internal business process in which the e-service is used.