A rendering resources management component can maintain information that tracks rendering resources that have been assigned (or leased) to individual user devices. The rendering resources management component can further maintain information related thresholds for the number of available rendering resources in the rendering resource pools, including minimums, maximums or ranges. The rendering resources management component can further maintain information related to performance metrics associated with the assigned rendering resources. Based on one or more of the above information (or additional information), the rendering resources management component can then cause the instantiation or termination of rendering resources to manage the rendering resource pool.