參考文獻： Peter Larid http://peterlaird.blogspot.com/

1 If it always makes you buy the hardware, it is not cloud computing.
2 If you owned all the necessary accessary, it is not cloud computing

3 If it says it provides  a "net grid" service, it is not cloud computing.

4 If it needs hundreds of pages documents for its services, it is not cloud computing.

5 If you can't pay it online, it is not cloud computing

6 If it doesn't provide API, it is not cloud computing.

7 If it requires you to re-structure your architecture, it is not cloud computing.

8 If it takes a long time to load services, it is not cloud computing.

9 If it takes a long time to release for its services, it is not cloud computing

10 If you know where it's equipment is , it is not cloud computing.

11 If it needs a consultant, it is not cloud computing.

12 Early period, if you need to specify the total number of required equipment, it is not cloud computing.

13 if it only runs at a single system envir., it is not cloud computing.

14 If you can't access it from your PC, it is not cloud computing.

15 If you need to install software to use it, it is not cloud computing.