Why is the amount on my invoice different from month to month?

The invoice based on your actual use of the service. A fixed monthly fee is charged for the vDC package you have chosen. In addition, the use of services and resources is billed outside of the vDC package content such as computing, storage, network resources and licenses.
Resources used on-top of the vDC package are charged per hour of use. Note that different months have different amount of hours. Our prices are based on a 720h average month.

For current vDC packages and pay-as-you-go pricing see: https://www.elits.com/public-cloud/