Software as a Service (SaaS) is a model of software delivery where customers access network-based software. This is far from a new concept and has had many names in the past, such as service bureau (in the 1980’s), ASP (in the 1990’s), hosted software or on-demand software in the early 2000’s and most recently Cloud SaaS as defined by NIST:
When you are looking at buying a new IT Management tool, do you put most of your emphasis on features, with only some consideration to cost to acquire? What about the effort to deploy and operate? You may only spend a few weeks or months doing the initial deployment, but you will have to administer the product for years. How do you factor these other considerations against features?