The German-Indonesian Tsunami Early Warning System for the Indian Ocean (GITEWS) runs on track. Main milestones like the development of the automatic data processing software SeisComP3, as well as the underwater communication for the transmission of the pressure data from the ocean floor to a warning centre are already finalised. Furthermore the calculations of the ocean modelling including the source modelling were completed and are available in a data base so that the system can be set into operation at the end of 2008. This positive conclusion is drawn by the GITEWS consortium consisting of different German geo and marine scientists on the occasion of the third anniversary of the tsunami catastrophe on December 26, 2004.