Abstract: The present invention achieves automation of validation of a catalog created by a cooperative service catalog creator through a GUI. A catalog verification device 60 is a catalog verification device 60 that verifies the catalog created by the catalog creation assistance system that assists creation of the catalog used in the orchestrator 50.

Abstract: A service linkage assistance device includes a reception unit, which receives definition information of a stateless upper-layer API exposed to an upper-layer device that links a plurality of services and definition information of a plurality of stateful lower-layer APIs exposed by a lower-layer device. The service linkage assistance device includes an interpretation unit, which extracts at least one lower-layer API corresponding to the upper-layer API by using the definition information of the upper-layer API and the definition information of the lower-layer APIs, and generates an API correspondence table in which an execution order of the extracted lower-layer API is set.

Abstract: A service linkage assistance device 5 includes an executing unit 51 which accepts a request for a stateless API for a stateful service which exposes a stateful API from a service linkage device 1 which executes a linkage service obtained by linking multiple services including the stateful service, interprets the request, and executes the stateful API and a storage unit 52 which stores dynamic information included in a response from the stateful API, and the stateless API is exposed to the service linkage device 1 by the service linkage assistance device 5.

Abstract: The present invention achieves automation of validation of a catalog created by a cooperative service catalog creator through a GUI. A catalog verification device 60 is a catalog verification device 60 that verifies the catalog created by the catalog creation assistance system that assists creation of the catalog used in the orchestrator 50.

Abstract: A catalog creation support system, catalog creation support method, and program that allow a catalog creator to intuitively create a catalog using a GUI are proposed. The catalog creation support system is a system for supporting catalog creation used in an orchestrator and includes a GUI generation device (30) configured to generate a GUI, and a catalog creation device (40) configured to create a catalog, wherein a catalog definition file (F1) in which definition information of the catalog is described is read and a service-independent catalog information abstraction model is constructed.