  The Higgs boson will be subject of intense experimental searches in future
high-energy experiments. In addition to the effort made at the Large Hadron
Collider, where it was discovered, it will be the major subject of study at the
International Linear Collider. We review here the reasons for that and some of
the issues to be tackled at this future accelerator, in particular that of the
precision of the Higgs-boson couplings.
