In larger developments, a use of configuration management is crucial; the company UIQ Technology is no exception. The configuration management method controls how the flow within a software developer should go, so the configuration management method and code complexity is something that works affects each other. Therefore, you might be able to combine multiple configuration methods to try to use the best from each method to decrease code complexity. That is the goal of this thesis, to see if the COTS, Single repository or Component Based could combine with the UIQ method to decrease code complexity. This have been tested through theoretical use cases for each method and the conclusion of the study is that, Single repository and Component Based works best in the UIQ method. However, COTS is not suited for the UIQ method because of the need of secrecy for large parts of the UIQ platform. UIQ wants to do as much as possible in-house, rather than give it out to other third-party companies that they are not in absolute need of. Some improvements have been achieved throughout Single repository, that the other third-parties companies needs to be upto- date before starting development, that is something that have not been valued before.