The Ubuntu Server operating system has not yet become as widely used as the Ubuntu desktop edition, but it is slowly getting there. A recent Ubuntu global survey showed that only 28% of respondents were from the US, and the majority of these were using the OS only for basic functions such as Web, database and backup servers while only a small minority used it for advanced work such as cluster computing or virtualization. On the other hand, most respondents said they are assigning mission critical tasks to the OS and are planning to add more Ubuntu OS servers in the future.