Precision measurements and searches for new phenomena in the Higgs
sector are among the most important goals in particle physics. The
large circular e+e- collider FCC-ee will provide collisions up to an
energy of 365 GeV, with extremely high luminosities. These
collisions will allow the ultimate precision on studies of the Higgs
boson couplings, mass, total width and CP parameters, as well as
searches for exotic and invisible decays.