Lecture held at the 17. Verbundkonferenz of the GBV in Oldenburg, Germany on 28 August 2013. Subject was the implementation of OCLC's WorldCat Local (WCL) and WorldShare Management Services (WMS) at Tilburg University in The Netherlands. Tilburg University is the first library in Europe where the WMS system was implemented. Discussed is the implementation project, challenges, experiences since go live, and lessons learned.