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36 End-User Computing For Dummies, Nutanix Special Edition These materials are © 2020 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. example, you may work for an organization that requires end-to- end control of the computing experience for your users because of security or compliance concerns, or you may work for a company that prefers to house its own equipment. As you consider on-premises DaaS versus cloud DaaS, what differences emerge? Table 3-1 shows you. From a user perspective and from the perspective of the person in IT who manages the DaaS environment, an on-premises DaaS solution operates identically or very close to the cloud solution. Both use the same management interface and tools. However, the on-premises DaaS solution may have challenges to overcome. Most importantly, your IT department will manage some aspects of the environment that typically would be handled by the service provider. Even though the service provider likely will provide support for the service, IT will have to ensure that power, networking, cooling, and other underlying data center services are provided to the DaaS servers. Even if the provider sends an all-in-one cabinet that contains all of the networking needed for the solution, IT still has to connect that to the network. The process involves making sure there is appropriate IP address- ing, firewalling, and more. When the time comes to add capacity to the DaaS environment, you need to wait for the provider to ship you new hardware. How- ever, it's more than likely that the provider implemented some level of capacity management, so they may be able to provide TABLE 3-1 On-Premises versus Cloud DaaS Characteristic On-Premises DaaS Cloud DaaS Who supports? Provider or IT Provider Cost model Pay monthly per desktop Pay monthly per desktop Hardware purchase needed Underlying networking None Scaling latency Moderate (new hardware must be shipped) None Reliability Dependent on your environment Guaranteed via a service- level agreement (SLA)