Survey of virtual machine placement in federated clouds

Cloud computing provides facility to its customers to dynamically scale up the applications, platform and the hardware infrastructure. But the resources provided from one cloud provider are finite and at some point of time can violate the SLA (service level agreements). One approach can be used to better facilitate the customers is to scale the applications, software platforms and the infrastructure to multiple independent clouds i.e. federated clouds. The federated clouds can share the resources with other cloud providers as the scale and load increases and can pay for the service on usage based. Virtual machine allocation is also an important parameter of federated clouds, because multiple clouds are exchanging the VM (Virtual Machine) with one another and the trading policies of all the clouds is not same. VM Allocation can be optimized for cost-effective Virtual machine allocation. This paper is a survey of all VM allocation policies available in federated clouds.