  This Meeting featured the recent advancements in our understanding of galaxy
clusters and the distant Universe, achieved by the past and new generation of
X-ray satellites. I summarize here the main themes that have been discussed:
(a) Clusters of galaxies as probes of cosmological models; (b) The physics of
cosmic baryons trapped within the potential wells of galaxy clusters; (c) The
origin of the cosmic X-ray background and the nature of the contributing
sources.
