Accessibility is never “one and done” That’s because code and content updates are never done. Every code and content change needs accessibility review. When accessibility is built into your culture, those reviews become second nature. When accessibility is a checkbox item, the organization relies on the person who is in charge of that check list remembering it and doing it right.
alt txt: You can take a perfectly accessible website, document or mobile application and break that accessibility with one poorly thought through update.