As engineers, we cannot physically monitor all the devices. We cannot go and roam all the floors of every building. For example, say there is a city with four or five companiesthere. An engineer cannot run around to check that all the devices are up and stable. With Cisco Prime, we can go to the monitor tab and check the physical devices. It shows you a list. For example, it will say that there are 10 APs in critical mode at the Las Vegas building. At the New York City site, there are five devices. You can dispatch the engineers to troubleshoot the problem. There's no need to send someone to check every floor. If there is a new deployment, you don't need to physically check the old setup. We only need to add the sitemap to Cisco Prime, input the model numbers of the devices, and verify where each device is located, so we can upgrade.