At the European Spallation Source (ESS), thousands of (physical and logical) devices will be in production and execute a wide range of functions to enable both the machine and end-station instruments to perform as expected from a controls point of view. Typical examples of such devices are racks, power supplies, motors, pumps, PLCs and IOCs. To properly manage the information of devices in an integrated fashion and at the same time allow external applications (consuming this information) to perform well, an application called Controls Configuration Database (CCDB) was developed at ESS. The present paper introduces this application, describes its features, architecture and technology stack, data concepts, interfaces, and ecosystem; finally, it enumerates development directions that could be pursued to further improve it. Proceedings of the 16th Int. Conf. on Accelerator and Large Experimental Control Systems, ICALEPCS2017, Barcelona, Spain
