Accessibility statement
A public document on a website or event page describing what accessibility provisions are available — captions, ASL on request, accessible registration, etc.
An accessibility statement is both informational (telling attendees what's available) and evidentiary (creating a public record of program commitments). It's not legally required by the ADA in all contexts but is treated favorably in litigation as evidence of intent to comply.
For event programs, a working accessibility statement covers: what's available by default (live captions, accessible registration), what's available on request (ASL, mobility accommodations, dietary), how to request accommodations, who to contact about accessibility issues, and what happens if something fails during the event.
Maintaining a single accessibility statement template across an event program is more sustainable than per-event statements. The DOJ's web accessibility guidance recommends accessibility statements as best practice.