Mobile-First Indexing
Google's practice of primarily using the mobile version of a page's content for indexing and ranking
Mobile-first indexing means Google predominantly uses the mobile version of a website’s content for indexing and ranking purposes. Since most searches now occur on mobile devices, Google prioritizes the mobile experience when evaluating pages. For link building, mobile-first indexing has several implications: ensure that backlinks you acquire point to pages that render properly on mobile, verify that your mobile site includes the same content and internal links as your desktop version, and confirm that linked landing pages offer good mobile user experience. Pages with poor mobile experiences may not rank as well despite strong backlink profiles, making mobile optimization essential.