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Chapter 2: Hybrid IT Critical Success Factors 15 These materials are © 2017 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. consistent performance. They'll notice and complain if applica- tions suddenly start running slower than they used to, even if the application itself is still working perfectly well. Containing Workload Runtime Environment Costs No one wants to spend more than necessary on IT. That's one of the reasons that the cloud is so tempting to so many chief financial officers (CFOs), but there are a lot of other consid- erations to take into account. Both on‐premises and cloud‐ based infrastructure have their benefits and drawbacks when it comes to cost. On‐premises For on‐premises infrastructure, there is generally a desire to maximize the impact of capital budget spend, which only comes around at replacement cycle time. To ensure that the infrastructure can meet the needs of the business for years to come, there is a tendency to overbuy. Simply put, we buy too much because we need to get through the next three to five years without more capital spend. But that's nothing compared to out‐of‐cycle need to spend. The business doesn't plan the next quarter's needs for three to five years out, but IT has to plan infrastructure that way, and we're often forced to perform upgrades off‐cycle, which can be expensive and difficult to manage. For ongoing on‐premises infrastructure deployments, organi- zations simply have to find ways to become more "cloudlike" in their approach. There are plenty of infrastructure offerings that can help with this, such as hyperconverged and compos- able solutions. But don't think that the way you spend and maintain on‐ premises infrastructure is bad. Here's the great thing about it: You can absolutely abuse it and push it to its limits, and doing so doesn't cost you a penny more.