e theories. 2.2 Criteria for Supplier Selection With the maturing of an industry specific software market the industry companies begin acquiring software from outside; also the supplier considerations become now important. To complement the analysis of issues affecting the market devel- opments, we will also look at the supplier selection criteria the interviewed CSP representatives mention. In previous research, different categories of purchases have been found according to the supplies being acquired (Kotler and Keller 2005): (1) routine-order supplies (supplies like raw material for a production process, office supplies etc.), (2) procedural-problem products (acquiring of such product can cause a change in a production process, or influences the efficiency etc.) and (3) political-problem products (these products have a deep influence to the business, requiring a process or procedure change). Acquiring software for an operator enterprise seems to fall into category (2) for smaller scope applications or (3) for large systems. The most important criteria for the supplier selection in category (2) purchases according to the classification (Kotler and Keller 2005), are Technical service Supplier flexibility Product reliability. For category (3) purchases, the most important supplier selection criteria are Price Supplier reputation Product reliability Service reliability Supplier reliability. Finding other criteria in use for supplier selection when acquiring software for the CSP, will point to special requirements that this industry companies set to the software support for their processes, or other factors. If such additional criteria or non-conformance to the normal criteria are found, this may - together with a Insights from Operator Interviews possible deviation from the general model of software market evolution - help to understand the developments around the CSP industry. 2.3 Software Acquisition - Make or Buy On software acquisition (topical areas 1 and 2), the operator representatives were asked how they a