This study should be regarded as a part of gradually increasing our knowledge in the area of software maintenance. Compared to earlier studies, the most obivous thing is that no radical changes can be observed in the field of software maintenance work. The attitude towards software maintenance work is practically the same. Standard applciation packages are still increasing while in-house development is decreasing. This will gradually have an extensive effect upon the software maintenance work and will change the responsibility assignments and the way of working.
Different vendors take on different amounts of responsibility.
That's why a model for software maintenance fundamentally is needed for every large application package. The interface between vendor and buyer is never the same. Some issues have to do with software maintenance organizations. They always differ a lot, which implies that the software maintenance work will be done in different ways. This report is written in Swedish.