At Sight Tech Global two years ago, we unveiled the ARIA AT initiative, which aimed to address the frustrating, damaging reality that screen readers are not interoperable on the Web, unlike their cousins for sighted users – browsers like Chrome and Safari. In other words,any developer that takes accessibility seriously has to test their code on JAWS, VoiceOver, NVDA and the rest. In this session, the people advancing the ARIA AT project are back with a refresher, progress to report, and a call to action.