As the pace of technology innovation is accelerating at almost exponential rate, making it difficult for the average internal IT groups to cope with the pace of change, they not only have to create the software internally - they must also maintain and struggle to upgrade it indefinitely.
The largest enterprise software companies in the world (IBM, Oracle, SAP, etc.) see their future delivery platform as the cloud, so their customers are rapidly retiring in-house IT environments, dramatically reducing their IT operational costs as well as their historical reliance on internal IT staff for software development and support.
In fact, the Gartner Group sees the public cloud for the hosting of enterprise applications as the fastest growing IT market in the next ten years. Check out this FREE eBook for an easy analysis of when to buy, when to build, and the pros and cons of each.