Cloud Computing is the industry whose demand has been growing continuously since itsappearance as a solution that offers different types of computing resources as a service over theInternet. The number of cloud computing providers grows into a run, while the end user iscurrently in the position of having many pricing options, distinct features and performance forthe same required service. This work is inserted in the cloud computing task schedulingresearch field to hybrid cloud environments with service-oriented architecture (SOA), dynamicallocation and control of services and QoS requirements attendance. Therefore, it is proposedthe QBroker Architecture, representing a cloud broker with trading features that implement theintermediation services, defined by the NIST Cloud Computing Reference Model. Anexperimental design was created in order to demonstrate compliance to the QoS requirement ofmaximum task execution time, the differentiation of services and dynamic allocation of services.The experimental results obtained by simulation with CloudSim prove that QBroker has thenecessary requirements to provide QoS improvement in hybrid cloud computing environmentsbased on SOA.
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