TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Huber, Melanie A1 - Zimmermann, Stephan A1 - Rentrop, Christopher A1 - Felden, Carsten T1 - The Relation of Shadow Systems and ERP Systems BT - Insights from a Multiple-Case Study JF - Systems : open access journal N2 - ERP systems integrate a major part of all business processes and organizations include them in their IT service management. Besides these formal systems, there are additional systems that are rather stand-alone and not included in the IT management tasks. These so-called ‘shadow systems’ also support business processes but hinder a high enterprise integration. Shadow systems appear during their explicit detection or during software maintenance projects such as enhancements or release changes of enterprise systems. Organizations then have to decide if and to what extent they integrate the identified shadow systems into their ERP systems. For this decision, organizations have to compare the capabilities of each identified shadow system with their ERP systems. Based on multiple-case studies, we provide a dependency approach to enable their comparison. We derive categories for different stages of the dependency and base insights into integration possibilities on these stages. Our results show that 64% of the shadow systems in our case studies are related to ERP systems. This means that they share parts or all of their data and/or functionality with the ERP system. Our research contributes to the field of integration as well as to the discussion about shadow systems. KW - Shadow systems KW - Shadow IT KW - ERP systems KW - Enterprise systems KW - Relation Y1 - 2016 SN - 2079-8954 SS - 2079-8954 U6 - https://doi.org/10.3390/systems4010011 DO - https://doi.org/10.3390/systems4010011 VL - 4 IS - 1 SP - 13 S1 - 13 ER -