Handing over a software system from development to maintenance is still an under-researched domain. The software community has a hazy insight into its constellation and inherent activities. In this paper, we have evaluated a preliminary version of a taxonomy of handover activities within one Swedish software company. The evaluation is conducted in an in-house handover context only. Despite this, our results provide evidence of its enormous complexity, variability and strong dependency on many other software engineering processes. / © 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.QC 20120223