1. Amazon, Amazon web services (AWS) - cloud computing services (2016) [cited 2016-06-15]. URL http://aws.amazon.com/.
2. Microsoft, Microsoft Azure (2016) [cited 2016-06-15]. URL https://azure.microsoft.com/en-us/.
3. Google, Google Cloud Platform (2016) [cited 2016-06-15]. URL https://cloud.google.com/.
4. Amazon, Amazon EC2 reserved instances (2016) [cited 2016-06-15]. URL https://aws.amazon.com/ec2/purchasing-options/reserved-instances/?nc1=f_ls.
5. Amazon, Amazon elastic compute cloud (amazon EC2) limits (2016) [cited 2016-06-15]. URL http://docs.aws.amazon.com/general/latest/gr/aws_service_limits.html#limits_ec2.