Survey comparing 2009 vs 2010 opinions of SaaS

The percentage of companies using SaaS has growth from 47% to 60% in just 11 months. This doesn’t mean that nobody has concerns about how to use SaaS, how to integrate it and some risk areas like security or performance management.
Here you have a slideshare presentation with a summary of a very interesting survey executed by InformatioWeek that compares the perception of business and IT professionals in 2009 and 2010.
I strongly suggest reading the full article here.