@phdthesis{Makhlouf2023, author = {Makhlouf, Rasha Rushdy Mohamed}, title = {Cloud Computing : Entwicklung eines Kostensch{\"a}tzungsmodells f{\"u}r Kunden}, doi = {10.26127/BTUOpen-6284}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-62846}, school = {BTU Cottbus - Senftenberg}, year = {2023}, abstract = {Cloud computing is an essential part of the digital transformation journey. It offers many benefits to organisations, including the advantages of scalability and agility. Cloud customers see cloud computing as a moving train that every organisation needs to catch. This means that adoption decisions are made quickly in order to keep up with the new trend. Such quick decisions have led to many disappointments for cloud customers and have questioned the cost of the cloud. This is also because there is a lack of criteria or guidelines to help cloud customers get a complete picture of what is required of them before they go to the cloud. From another perspective, as new technologies force changes to the organizational structure and business processes, it is important to understand how cloud computing changes the IT and non-IT departments and how can this be translated into costs. Accordingly, this research uses the total cost of ownership approach and transaction cost theory to develop a customer-centric model to estimate the cost of cloud computing. The Research methodology used the Design Science Research approach. Expert interviews were used to develop the model. The model was then validated using four case studies. The model, named Sunny, identifies many costs that need to be estimated, which will help to make the cloud-based digital transformation journey less cloudy. The costs include Meta Services, Continuous Contract management, Monitoring and ITSM Adjustment. From an academic perspective, this research highlights the management efforts required for cloud computing and how misleading the rapid provision potential of the cloud resources can be. From a business perspective, proper estimation of these costs would help customers make informed decisions and vendors make realistic promises.}, subject = {Cloud computing; Total cost of ownership; Transaction costs; Cost estimation; Digital transformation; Cloud Computing; Gesamtbetriebskosten; Transaktionskosten; Kostensch{\"a}tzung; Digitalisierung; Cloud Computing; Kostensch{\"a}tzung}, language = {en} }