Composite service provisioning is provided. A processor receives a first demand value of a first composite service. The processor identifies a sub-service based on the first composite service. The processor pre-provisions a first pool of service instances corresponding to the first composite service, the first pool of service instances having a quantity of service instances based, at least in part, on the first demand value. The processor determines a second demand value of the sub-service based, at least in part, on the quantity of service instances of the first pool of service instances. The processor pre-provisions a second pool of service instances corresponding to the sub-service, the second pool of service instances having a quantity of service instances based, at least in part, on the second demand value. The processor modifies each of the first pool of service instances with placeholder credentials that identify the second pool of service instances.