This research summary focuses on the principles and concepts of
                      lean thinking. In addition, the link between the cloud phenomenon and
                      lean thinking was drawn. As was evident from this research summary,
                      concepts, cloud and lean, are difficult to describe explicitly. Cloud is one
                      of the main global trends washing through the ICT industry, bringing in
                      changes to the current technological and business environment. Even
                      though cloud is referred in many contexts, it does not yet have a clear
                      and complete definition in literature. In this paper, we consider cloud
                      more widely than just cloud computing. We believe that lean thinking is
                      one of the most powerful means to help companies to survive and create
                      a competitive advantage in the cloud business environment.