Certain services may require more experience or more advanced skill sets, but is only required at certain times or at a specific arrangement. A minimum fee is charged for availability of a resource and a service or function is delivered.
Certain portions of operations may be required to be fulfilled by the provider and the rest in-house by the customer.
This service differs from Co-sourcing where the responsibility of the overall business deliverable still sits with the customer. Specific functions are the responsibility of the provider.