SmartVPS definitions
Multi-account VPS(SmartVPS): A hosting service, provided by ICDSoft, hosted on a single VPS instance and allowing multi-account hosting.
Master/parent account: The first account created with the provisioning of the multi-account VPS service.
Child account: A custom-defined hosting plan created on a multi-account VPS plan by the parent account owner.
Overselling: The practice of selling goods or services in excess of actual supply. Rented compute services, like web hosting for example, rely on overselling in order to optimize hardware usage and provide some profit margin. A healthy amount of overselling is unnoticeable for end users as every end user can get the resources they are paying for, since all users won't use all their available resources at a single point in time. Unhealthy amount of overselling is discouraged.