DGFI-TUM is strongly cross-linked with other institutions and has continuously been involved in various national and international activities. Intensive collaborations exist in particular in the frame of the international scientific organisations IUGG (International Union of Geodesy and Geophysics), IAU (International Astronomical Union) and IAG (International Association of Geodesy).

The International Services of the IAG form the backbone for many disciplines of geosciences and the national and international spatial data infrastructure. They were established to continuously collect observations and meta data related to astrometry, geodesy, geophysics and neighboring disciplines.

DGFI-TUM recognises the outstanding role of the IAG services for science and practice. The institute operates - mostly by long-term commitments - data centers, analysis centers, and research centers. Scientists of DGFI-TUM have taken leading positions and supporting functions in IAG's Commissions, Services, Projects, Working and Study Groups, and in the Global Geodetic Observing System (GGOS).

The research of DGFI-TUM and the international co-operations in the International Services are closely coupled. New research results enter directly into the computation of geodetic products of highest quality. The International Services coordinate the generation of these products under predefined standards and conventions. In this context, DGFI-TUM has a position of particular importance by operating the GGOS Bureau of Products and Standards together with partners from the TUM.