The International Linear Collider Higgs Factory

An international team has recently completed the Technical Design Report for the International Linear Collider (ILC). The ILC is an electron-positron collider with a design target centre-of-mass energy of 500 GeV. Following the Higgs boson discovery it has been proposed to realise the ILC by building a 250 GeV 'Higgs Factory', and subsequently to upgrade it in stages to higher energies of 350 GeV, where it would also serve as a 'top factory', and eventually to 500 GeV to allow access to the top-Higgs and Higgs self- couplings. The Japanese particle physics community has proposed to host the collider in Japan. I will describe the programme of precision Higgs-boson measurements at the ILC. I will give an overview of the collider design, and report on the project status