Software as a Service and changes in business informatics

This thesis is focused on description the situation in the field of providing business information systems in the form of services and aspects related to the transition IT department from software licensing model to consumption of software in the form of IT services - the software as a service model (SaaS). The main objective of this thesis is to analyze the impact of the transition in enterprise IT department from software licensing model to SaaS model. To achieve this goal there is an adequate theoretical basis described in the theoretical part of this work and survey on the basis of interviews in the practical section. The first part describes the development of enterprise information model to cloud computing, including the presentation of the current market situation. The second part discusses the requirements to enterprise IT department in SaaS model, including an analysis of the impact of the transition to SaaS. In the final part of this thesis is carried out survey within the small and medium-sized companies that have moved their business information systems to SaaS model. The contribution of this thesis is primarily in the analysis and recommendations for companies that planning to move to the SaaS model. In the theoretical part of this thesis it is description of the impact of SaaS to the enterprise IT department, including assessing the relevance of ITIL framework in the time of SaaS