Design systems can be a super effective way to propagate a lot of accessibility at once, across many services. Not just as part of components that have good defaults, but also, maybe especially, in written documentation that helps people understand better what to do.
Hidde de Vries (@hdv@front-end.social) is a web enthusiast from Rotterdam, The Netherlands. He currently works on accessibility standards for the Dutch government (views his own) and is in the W3C's AB. Previously, he worked for Mozilla, W3C/WAI, national and local governments, Sanoma Learning and others as a freelancer. Hidde is a public speaker (all 79 talks). In his free time, he works on a coffee table book covering the video conferencing apps of our decade.