Development of a DCU monitoring web application for CMS ECAL

This report summarizes the project done by summer student Olov Günther-Hanssen, who stayed at CERN during the months of July and August 2019. The project was supervised by Giacomo Cucciati. What follows describes the background and motivation of the project, the process and lastly the result of the project. Beside Giacomo Cucciati, I would like to acknowledge Davide Valsecchi and Roberta Arcidiacono for the help they provided me during the project.