This is part two of our two part series Part 1: The importance of web accessibility standards Part 2: Accessibility in R applications: {shiny} (this post) Web applications that are Web Content Accessibility Guidelines (WCAG) compliant are becoming an increasingly prominent part of my role as a data scientist as the importance of ensuring that data products are available to all takes a more central focus. This is particularly true in the case of building solutions for public sector organisations in the UK as they are under a legal obligation to meet certain accessibility requirements.