1. One or more computer-readable media having thereon a data structure, the data structure including the following: a plurality of service identification fields, each identifying a service in a sequence of two or more services; and a transformation class field specifying a class of transformation to be performed on either input data prior to being provided to the sequence of services, inter-service data provided between two services of the plurality of services in the sequence of services, or output data output from the sequence of services; and one or more transformation parameter fields identifying one or more parameters of the class of transformation to thereby more specifically define the transformation.