This thesis deals with the testing process improvement and the implementation of specific improvement. Its objective is to describe the methodology TPI NEXT, define possible approaches to synchronization tools HP Quality Center and JIRA and implementation of the application for synchronization defects from HP Quality Center to JIRA. The first part of the thesis defines the basic terminology of testing and testing principles. Second part contains description of the methodology TPI NEXT, focusing on its key areas. The next part of the thesis describes synchronization of HP Quality Center and JIRA in the context of testing process improvement. The main part of the thesis focuses on approaches to synchronization tools HP Quality Center and JIRA...