Case Study: Modular Accessible Component Library Reduced Support Tickets at a Banking App

Tech · 4 min read

The product team consolidated dozens of ad-hoc UI variations into a single, token-driven component library that baked accessibility into core components: accessible form fields, error states, and keyboard patterns. The rollout included a migration plan, developer lints, and a living documentation site with usage patterns and accessibility rationale.

After three months, the team reported a 40% reduction in support tickets referencing navigation and form issues and a 30% faster resolution time for reported bugs. Engineers attributed improvements to consistent ARIA application and fewer visual regressions; designers credited clearer affordances and standardized error messaging.

The project’s key learning was not just technical: governance and onboarding mattered most. Regular audits, a clear deprecation path for legacy components, and pairing sessions between designers and accessibility engineers kept adoption steady. The team recommends measuring both user-facing impact and internal developer velocity to demonstrate ROI.