Abstract: A cloud exchange system processes transactions for cloud computing services. Cloud resources may be viewed as commodities, in which cloud customers may be dependent on cloud providers to provide hosted centralized computer facilities. The cloud customer may move computing services in the form of one or more virtual machines by buying a contract that specifies the cloud services and is purchased through the cloud exchange system. The cloud exchange system may receive a request from the cloud customer and an offer from a cloud provider for a cloud service and may match the request and the offer to obtain matched attributes. One of the available contracts may be selected by the cloud exchange system based on the matched attributes of the request and the offer, where the selected contract specifies the cloud service. A transaction charge for the transaction may be determined from at least one of the matched attributes.