This article introduces an architecture design of a festival management system server. The design incorporates the concept of n-tier architecture and that of 'thin' server. The designed architecture was evaluated in view of cyber security, particularly defense-in-depth concept. The evaluation was performed to check if the features of the defense-in-depth concept according to a guideline are applied properly to the architecture. After reflecting the evaluation results, the designed architecture has become adequate for a festival management system when the high security is required for the system.