Accessibility works best as a level your product never drops below. This website is held to WCAG 2.1 level AA on every page. You can ask for the same floor in your own product.
What you get
A floor, where most teams have a project.
The usual pattern is familiar. An audit arrives, a list of issues is worked through, and the product is in good shape for a while. Then the next features ship. A form loses its labels, a new dialog traps the keyboard, a colour is chosen for the brand and not for reading. A year later the audit comes back with a fresh list, and the clean-up starts again.
A floor changes the question. Accessibility stops being a piece of work that is finished and starts being a level that each page is expected to meet, the new ones as much as the old ones. Nobody has to remember to schedule the next round, because the level was never allowed to slip.
The proof we can point to is our own. This website is held to WCAG 2.1 level AA on every page. That covers the page you are reading and the pages that arrived after the first launch.
For your product, this means the level you choose is part of what finished means. A new screen is not done when it looks right. It is done when someone using only a keyboard, or a screen reader, can get through it too.
What it looks like in practice
Say your team adds a sign-up flow next quarter. Under a project, its accessibility waits for the next audit. Under a floor, the flow arrives already usable with a keyboard and readable by a screen reader, and the change says so in plain words your team can check.
You decide the level, and you decide where it applies first. Sign-in, checkout and the pages people use most are natural places to set the floor before the rest. You decide what ships. Nothing reaches your users without your approval.
Two limits are worth stating. We do not check your live product for accessibility as a separate service, and we never promise legal compliance. What you get is work on your product that keeps the level you chose.
If you want to see this before committing, start with one journey that matters to you.