Joe Weinman, Strategic Solutions Sales VP for AT&T Global Business Services outlined five questions you should ask yourself regarding Cloud-consumption:
1. Is demand constant?
2. Is growth predictable?
3. Can demand be shaped?
4. Where are the users?
5. Is the application interactive?
The answers to these five questions along with the big question of whether or not you need to "own" the infrastructure should help decision making.
1. In general, most demand change from time to time but the trend can be anticipate in SHORT TERM. So, it depend on how we defind constant
2. It is also a problem of time frame. May be we can measure with pay back period
3. Most demand can be shaped but it depend on the political skill of the developer
4. Even for multiple national company, there still alternative like VM, Citrix. Is this question really matter?
5. There is no difficult to find poor design UI that substantially inferior than web application. This may not be a issue either
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