ESA/ESOC is a very active Analysis Centre within the IGS and it is providing excellent products to the IGS. This poster presents the quality and consistency of the ESA products over the last years. Main topics that will be addressed are: Multi-GNSS: The modernization of the existing and the deployment of new Global Navigation Satellite Systems introduces new satellites, new orbits, new code modulations and additional frequencies. Improvements in the IGS products will strongly depend on our understanding of these new systems. We are focusing on: satellite force models, handling of different attitude modes, satellite PCO/PCV values, and the handling of the different signals and biases. Orbit Modelling: The new GNSS satellites, GPS IIF, Galileo, BeiDou, QZSS, are posing some interesting new challenges. The key issue here is the increasing area to mass ratio of the satellites which makes them more sensitive to the radiation pressure. Furthermore, the different attitude modes that are being used to handle the satellite eclipse phase are posing some new and interesting challenges. Others: Some other research we have done in the last years on sub-daily ERP models, higher order ionosphere corrections, and combination of the different geodetic techniques.