How do you make sure it is accessible?

WCAG is part of the build from the start, not an afterthought review. For legal requirements such as EAA, LPTT, and DOS, we connect the accessibility service.

In practice, this means that contrasts, keyboard navigation, heading structure, and screen reader support are handled when the interface is designed and coded, long before it is to be delivered.

We test continuously using both tools and by hand. Automated tests catch some of the requirements; the rest require someone to sit down with a keyboard and screen reader.