As a reader, I want Related Articles / Read More to load quickly, so that I can more easily find other neat stuff at a glance.
- Card data in Related Articles / Read More is obtained in 250ms or less at production web scale from a RESTbase endpoint.
- URL format is predictable such that web, Android, and iOS can all get consistent responses.
Note, the discussion and ensuing work in T124225: PageImages should never return non-free images may introduce an extra image field (e.g., "freely_licensed_fallback") in the response. However, it's conceivable no such additional field will be needed.