The Software-as-a-Service model has been getting pretty popular in the recent times and as Gartner notes, the revenue from SaaS are growing in double digits and shall continue to grow in the near future.

Worldwide revenue from Saas
2008 : $6.4 billin
2009 : $7.5 billion (apprx.)
2013 : $14 billion

As you see, this year global Saas revenues are expected to grow by 17%. So where is the revenue coming from. Here is a split up of estimated revenues from the various enterprise markets for Saas delivery for the year 2009

Content communication and collaboration : $2.5 billion
Office suites : $68 million
Digital content creation : $62 million
Customer Relationship Management : $2.28 billion
Enterprise Resource Planning : $1.2 billion
Supply Chain Management : $826 million
Other application software : $472 million

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