High angular resolution studies of maser emisson at radio and mm wavelengths provide one of the best existing tools for deriving
kinematics and physical conditions of regions that are hidden in the dense environments and are not reachable at other wavelength ranges. Therefore, the European VLBI Network, as well as other VLBI networks, are successfully used to investigate high-mass star forming regions and evolved stars. With the milliarcsecond resolution and sensitivity of a few mJy, VLBI provides detailed information concerning proper
motions and magnetic field. This is a summary of recent observational progress on masers at cm wavelengths and how these results have affected our understanding of stellar evolution. While this summary will utilize some of the most characteristic, recent maser results to illustrate the findings, it is obviously not possible to cover all ongoing research in this proceeding. Perhaps this reflects the large amount of activity in our maser community.