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CloudSigma
CloudSigma Ltd. is an infrastructure as a service (IaaS) company headquartered in Zurich, Switzerland.
The company has cloud locations in Zurich, Switzerland, San Jose, California, Washington, DC, Miami, Florida and Honolulu, Hawaii. It hosts its servers in primarily Equinix data centres, as well as, it is powering the DRFortress cloud in Hawaii. CloudSigma provides services on a utility computing basis with open networking and software layer. It has been recognised by the industry as an innovator in the field of infrastructure-as-a-service for its utility approach and open platform. It was the first to offer Solaris cloud servers and a number of other related service components. End users remain in full administrative control and are able to managed their virtual instances via its web based provisioning portal or via API created by the company itself.
== Business model ==
CloudSigma targets customers from all over the world due to its geographical presence and strategic expansion. CloudSigma offers unbundled resources and prices. The billing was designed to keep this level of flexibility and transparency provided by the resource provisioning which eliminates paying for idle capacity. Customer are able to adjust the capacity levels per their exact needs at any point in time, scale out on demand, plan capacity utilization in the long term and purchase subscriptions based on their demands.
CloudSigma employs a combination of API access and a browser based graphical user interface web console. The company sells four products, CPU, RAM, computer data storage and data transfer all price by unit per hour. The company also employs varies prices in relation to the utilization rate of their cloud. If one is prepaying for capacity this means that you subscribed for a defined capacity volume for a defined period of time. The time and resources size had been chosen by you in advance before purchasing them. When running on "Pay-per-Use" or "Burst", customers benefit from being able to spin up a number of VMs on demand and scale out for short period of time, such as minutes and switch them off later or delete them. The system is set to check capacity utilization levels on a 5-minute basis. For instance, if you one runs a VM for 15 minutes and then destroys it/turns it off, the customer is charged only for these 15 minutes. Once having completed the check, the next 5 minutes the system will be charging the customer based on the utilization level of the previous 5 minutes. The process repeats until the VM is turned off and no more capacity is consumed. This Burst model is suitable if you want to cover your occasional computing needs on top of the permanent one.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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