Cloud service broker and method for providing and managing wan acceleration service

PURPOSE: A cloud service broker supporting and managing an acceleration service and an acceleration service support and management method thereof are provided to enable a tenant to adaptively use the acceleration service by selectively generating an acceleration section in an end-to-end between the tenant, a service provider, and the cloud service broker. CONSTITUTION: A first accelerator(320) generates a first acceleration section providing a cloud service to a tenant at high speeds or a first basic section providing the cloud service at a basic speed. A second accelerator(330) generates a second acceleration section receiving the cloud service from a service provider at high speeds or a second basic section receiving the cloud service at a basic speed. If a request message for the use of the cloud service is received from the tenant, an accelerator manager(340) controls the first and the second accelerators based on the contracting contents. [Reference numerals] (120) Multi-tenant accelerator manager; (310) Network manager; (320) First accelerator; (330) Second accelerator; (340) Accelerator manager; (350) Message interceptor; (360) Analyzing unit; (370) Usage amount storage unit; (380) Charging unit