Abstract: High level characteristics are extracted from a virtual machine provisioning request stream for a cloud computing environment. A plurality of prediction models are generated for a plurality of different types of virtual machines. A regression-correlation ensemble is applied to appropriate ones of the prediction models to predict future virtual machine demand for the cloud computing environment.

Abstract: One embodiment a method for providing a cloud-based service to an enterprise comprising a plurality of members includes receiving at least a portion of a policy a first user within the enterprise, where the policy defines a limit on usage of the cloud-based service by at least some of the plurality of members, receiving a request for the cloud-based service from a second user associated with one of the plurality of members, and automatically responding to the request in accordance with the policy.

Abstract: One embodiment of a computer readable storage medium contains an executable program for providing a cloud-based service to an enterprise comprising a plurality of members, where the program causes a processor to perform steps including receiving at least a portion of a policy a first user within the enterprise, where the policy defines a limit on usage of the cloud-based service by at least some of the plurality of members, receiving a request for the cloud-based service from a second user associated with one of the plurality of members, and automatically responding to the request in accordance with the policy.

Abstract: High level characteristics are extracted from a virtual machine provisioning request stream for a cloud computing environment. A plurality of prediction models are generated for a plurality of different types of virtual machines. A regression-correlation ensemble is applied to appropriate ones of the prediction models to predict future virtual machine demand for the cloud computing environment.

Abstract: Checking health of information technology infrastructure based on log data, in one aspect, may collect log data non-intrusively from a production system, said log data at least associated with transactions occurring in the production system and resource utilization of the production system, may normalize said log data into a plurality of log data types, may perform data regression analysis using said plurality of log data types to estimate resources consumed by each of said transactions and throughput of each of said transactions, and may use a queuing model to predict performance of the information technology infrastructure under various workloads.

Abstract: A method and system for checking health of information technology infrastructure based on log data, in one aspect, collect log data non-intrusively from a production system, said log data at least associated with transactions occurring in the production system and resource utilization of the production system, normalize said log data into a plurality of log data types, perform data regression analysis using said plurality of log data types to estimate resources consumed by each of said transactions and throughput of each of said transactions, and use a queuing model to predict performance of the information technology infrastructure under various workloads.