A cloud service testing system using a cloud open API-based token, a cloud service testing method, and an apparatus for the same are disclosed. The cloud service testing system collects connection frequency information recorded in at least one terminal device, acquires a target token issued to a function changed according to an update of a cloud service, generates a testing group including an associated token corresponding to the target token, and performs a test for functions to which tokens included in the testing group are issued.
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