An increasing amount of organisations are moving their IT-operations to cloud computing systems which fundamentally changes the role of IT within the organisations. This affects how end users perceive the IT-artefacts and how they interact with them. Research regarding IS-Strategy invariably return to the subject that is IT-implementation and discuss what organisations can do to promote a smoother transition towards new IT-artefacts. We use acquainted research from IS-strategy, intrinsic and extrinsic motivation and technology acceptance to help us gain a broader understanding of end user adoption. The nature of cloud computing systems differs from older technologies, regarding the opportunities they provide organisations with. We imply that there is a lack of understanding of how theories and concepts originating from these research areas can be combined to study a cloud computing implementation. This interpretative case study focuses on shedding new light on how the unique capabilities of cloud computing systems affect IT-implementation as we know it. Our data were collected through interviews conducted at an IT-consulting company. The data analysis revealed that end user adoption is dependent on intrinsic and extrinsic motivation to find perceived usefulness and perceived ease of use. The analysis also shows that users whom are less willing to adopt are more dependent on an IS-strategy that promotes the use of supportive extrinsic motivation. We also discuss an unexpected finding: perceived purpose of use. We propose that the perceived purpose of use is a construction by individuals, originating from the lack of understanding the organisations explicit purpose for implementing and using the cloud computing system. This finding aims to explain why the use of the different functions is fragmented within our research. This study contributes with a new concept and rich insights that reveals the key relations that affects end user adoption and their conceptualization of a collaborative cloud computing system.