What is a deploy-triggered accessibility scan?

A deploy-triggered scan is an accessibility test that runs automatically when your storefront ships a change: a production deploy, a theme publish, or an app update. Instead of testing on a calendar, it tests on change, which is when regressions actually happen. Failures are diffed against the last clean baseline and attributed to the release that caused them.

Why change is the right trigger

Accessibility failures on a working store almost always arrive with a change. Testing weekly means a Monday deploy that breaks focus order sits undetected for days, with full traffic. Triggering on the change itself shrinks the blind window to minutes, and the diff isolates exactly what the release altered instead of presenting a full-site mystery.

How it works in practice

A lightweight check fires after each deploy or publish and kicks off a targeted scan of the changed routes in a real browser context. Results are compared against the stored clean baseline, and any new failure is reported with the deploy identifier and the responsible component. Scheduled full scans continue underneath as the safety net, so drift between deploys is still caught.