| Cloud computing: state-of-the-art and research challenges Recent countries visiting this post |  |
 | 12 | United States |
 | 1 | United Kingdom |
 | 1 | |
 | 1 | India |
 | 1 | New Zealand |
| Cloud computing: state-of-the-art and research challenges Recent countries visiting this post | |
| 12 | United States |
| 1 | United Kingdom |
| 1 | |
| 1 | India |
| 1 | New Zealand |