The progress of digital accessibility is typically measured by results of annual audits making it hard to measure progress. Kate Kalcevich of Fable shares a different approach, using KPI's that help measure and track progress regularly.
KPIs to measure progress in digital accessibility | Fable (makeitfable.com)
A key performance indicator (KPI) is a quantitative measure of progress towards a goal. Fable’s KPI framework offers a practical way for teams to report on accessibility progress. They are easily communicated to senior leadership, sidestepping the complexity and resource demands of measuring accessibility using the Web Content Accessibility Guidelines (WCAG).
https://makeitfable.com/article/tracking-digital-accessibility-progress-with-kpis/