Jesse Young walks through the steps of how the Vox homepage works. “If you visit the Vox front page in the morning, an article may be nestled somewhere in the corner of the page. Come back at noon and that same article might span an entire row. Rarely will you see the same layout twice. The reason is because every layout is now algorithmically generated based on the content on the page,” writes Young.

+ NPR’s Visuals Team shares how subtle changes improved user engagement with their “book concierge,” why they made the changes, and the difference the changes made (NPR Visuals Team)