We have a number of PDF's that are updated each year with new information. These PDF's generally get a decent level of traffic and are indexed by search engines as well as bookmarked by our users.
We understand it is not possible to update the existing media library file and it is necessary to upload a new PDF and manually update all links throughout the website to point to the new file.
How do we add a 301 redirect for the CDN url so that search engine results and users with old bookmarked links are redirected to the new PDF version?
This is important for SEO and user experience.