Search engine optimization (SEO) is in for a shake-up in 2021. Google’s mobile-first indexing update, scheduled for March 2021, will remove all desktop-only sites – and images or assets in a desktop-only site – from Google’s index entirely. Thanks to the ubiquity of smartphones and tablets, Google will only use the mobile version of the content for indexing and ranking. But before we look at some of the best practices for mobile-first indexing, let’s clear up any potential confusion about the update and what it means. Mobile-first indexing is currently the default, and it has been for a while. Any website...