We have presetned CloudScale Environment at the CloudOpen Europe 2014 (LinuxConf) in October. In this presentation, we have showed the use of the CloudScale Environment, an open-source solution providing an engineering approach for building scalable cloud applications. Using a our showcase (CloudStore), we have showed how the CloudScale Environment can be used to improve the scalability and cost-efficiency of existing systems, how to use the tool during design time, and how to spot potential anti-patterns by analysing the source code or running automated tests on the deployed system.