CMS conditions database web application service

The web application service is part of the condition database system of the CMS experiment. The application server is built upon condition python API in the CMS offline software framework and serves applications and users not involved in the event-processing. The main client of the application server is the condition database web GUI, which currently exposes three main services: the Tag Browser, the Global Tag, the Historic Chart condition date in terms of their version (TAG) and the interval of validity (IOV). The global tag component is used by physicists to inspect the organization of the tags in a given data taking or data production, while production managers use the web service to produce such tag hierarchy. The History chart plotting service creates dynamic summary and distribution charts of the payload data in the database. Fast graphical overview of different information greatly contributes in monitoring and validating the calibration data stored in the condition database.