Data center consists of mobility technology and expandability based on virtualization to be flexible in responding to any business situation. In this regard, the complexity about the communication among applications increases. CISCO Tetration Analytics analyzes the mutual communication patterns of the complicated applications of data center, and secures the visibility on traffic flow. The CISCO Tetration analysis technology secures the visibility of entire applications to facilitate the working performances of the expansion and transfer of data center and migration. In addition, the technology is capable of establishing the policies based on White List by analyzing the interrelations of applications.