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Hybrid IT For Dummies, HPE Special Edition 10 These materials are © 2017 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. As you start to adopt as‐a‐service offerings, the provider you choose begins to manage certain aspects of the environment for you. For example, IaaS offerings may provide you with server, storage, networking, and a hypervisor upon which your staff handles just the operating system and up. At the extreme side of the equation are SaaS offerings, which are fully deployed and managed by the service provider. You simply consume the application. Table 1‐1 gives you a rough overview of who holds primary responsibility for each aspect of an environment in various cloud scenarios. Bringing IT All Together: Hybrid IT In the previous sections, I tell you about both on‐premises and cloud offerings. I explain that on‐premises infrastructure, when designed correctly, can be very cost effective. I also explain that cloud carries with it a great number of opera tional benefits. So, which should you choose? The answer is that you should choose both and then leverage both sides of the equation when it makes sense. You might run particularly sensitive and latency‐sensitive applications Table 1-1 Cloud Offerings Responsibility Comparison Responsibility On‐Premises IaaS PaaS SaaS Application You You You Provider Data You You You Provider Runtime You You Provider Provider Middleware You You Provider Provider OS You You Provider Provider Hypervisor You Provider Provider Provider Server You Provider Provider Provider Storage You Provider Provider Provider Networking You Provider Provider Provider