Regarding the monitoring tool, we have discussed the following: We are considering three levels of monitoring according to the resource type, namely the physical infrastructure, the virtual machines and the grid services. Monitoring information in the case of physical infrastructure and virtual machines will be gathered and visualized by utilizing standard cluster monitoring tools which will be integrated with the monitoring module of OpenNebula. As a proof of concept, we will utilize the Ganglia monitoring tool. We will extend the ganglia monitoring tool with virtual-machine related metrics and we are going to modify opennebula to get its monitoring information from the ganglia api. Regarding the monitoring of grid services, we will utilize already existing grid-monitoring tools. Regarding the accounting tool, we have discussed the following: We are going to utilize and extend the Accounting Toolset of OpenNebula in order to keep track of resources spent by each cloud user. The resources which are of interest include the total number of virtual machines per user, the total number of cpu cores, the total ram, the storage space and the network bandwidth consumption. Regarding the policies that will be used to regulate usage, we are considering to apply quotas per user, and different user types. In the next demo, we are going to do the following: - install the ganglia tool which will monitor the physical infrastructure - extend ganglia to acquire virtual machine related information by implementing the appropriate probes which will talk with the hypervisors.