This thesis is concerned with the analysis of Cloud Computing as a solution for corporate information system and also its component for customer relationship management as a separate application in small and medium-sized companies. This thesis is also engaged in the research of small and medium-sized companies on the Czech market and finds the attitude of companies to applications run due to Cloud Computing solutions and what they think about Cloud Computing as such. The main objective of this work is to analyze the possibilities of this relatively new platform and highlight the the benefits and potential risks of their use. The work is divided into two parts. The first part focuses on the theoretical plane of Cloud Computing, where the bas...