Chapter 1 : Surveying the State of IT for the Enterprise 9
“ as‐a‐service ” marketplace is likely to triple in size through 2019 ( source : https :// 451research . com / report‐short ? entityId = 87624 & referrer = marketing ).
Figure 1-1 : Comparing public cloud service types .
Large IaaS providers now deliver platform capabilities , such as databases and message queues , that allow applications to be built quickly using packaged building blocks .
Clouds are great for unpredictable or highly variable workloads because you pay only for what you use . But for more stable or predictable workloads , the cloud is not as economical . Renting is good for the short term or when you don ’ t know what the future holds , but owning is more economical when you know you ’ re going to stay in a place for a while .
In an interesting dynamic , cloud adoption appears to act like a slingshot . For a while , a business builds and deploys an application on a public cloud service . Then , when the application reaches a certain scale or becomes predictable , the business brings it back in‐house .
Increasing viability of public cloud
Early on , even with the analyst hype about public cloud decimating IT departments and forcing CIOs out of their jobs ,
These materials are © 2016 John Wiley & Sons , Inc . Any dissemination , distribution , or unauthorized use is strictly prohibited .