Selzam, ThomasNeuroni, Alessia C.Riedl, ReinhardWimmer, Maria A.Janssen, MarijnMacintosh, AnnScholl, Hans JochenTambouris, Efthimios2018-10-122018-10-122013978-3-88579-615-2https://dl.gi.de/handle/20.500.12116/17287In this case study we illustrate the high complexity of a rather simple inter-agency e-government service: change of address in Switzerland. This enables us to identify typical sources and dimensions of complexity for inter-agency services in countries with decentralised competencies among government agencies. From the resulting picture we draw conclusions on how to deal with complexity - and how to avoid further dramatic increases of e-government complexity. In particular, we discuss the role of coordination of e-government service development projects plays in the fight against exploding complexity.encomplexity managementstakeholder managementcoordinationinfrastructureinteroperabilityinterdependenceText/Conference Paper1617-5468