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Cloud computing platforms allow application providers to rent server capacity to run hosted applications and to dynamically vary the rented capacity to match demand. Today's cloud platforms offer a plethora of different server configurations for rent and price them differently on a cost-per-core basis. Furthermore, cloud platforms support different replication and migration mechanisms to support elastic provisioning of servers. In this paper, the authors present Kingfisher a cost-aware provisioning system for cloud applications that can optimize either the rental cost for provisioning a certain capacity or the transition cost of reconfiguring an application's current capacity.
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