This presentation discusses the installation of WSO2 Identity Server and homogenization of various user stores in the municipality of Heraklion Crete in Greece. The presenter explains the situation that existed before the implementation, where there were multiple and heterogeneous per application user management solutions, problems that occurred, and how they solved them. The presenter also talks about how they managed to prepare the municipality in order to be General Data Protection Regulation (GDPR) compliant, giving them the tools to create a dashboard with users data where they were able to stay informed and updated.