For fifteen years, ignoring Bing was a defensible resource decision. Single-digit share, an audience you reached anyway, a webmaster portal nobody bookmarked. That calculus broke the day ChatGPT started answering questions with live web results, because those results are grounded in Bing's index. When an AI assistant browses, cites, or recommends, there is a meaningful chance the retrieval layer underneath is Bing. Copilot sits inside Windows, Edge, and Office with the same plumbing. The search engine you ignored became infrastructure for the channel everyone suddenly cares about.
Notice what kind of shift this is, because it explains why almost nobody has acted on it. Bing's consumer share barely moved; if you grade the channel the old way, by human beings typing queries into bing.com, nothing happened and the old neglect still looks rational. What changed is that Bing became a wholesale supplier to other interfaces, and wholesale demand does not show up in the share charts anyone watches. The marketers still reading the consumer share numbers are measuring the storefront of a business that quietly became a distributor.
The index you are not in
The practical consequence is blunt: a page that Bing has not indexed does not exist to a large slice of AI-assisted search, no matter how well it ranks on Google. And Bing's crawler is not Google's. It is slower to discover, more literal about technical signals, and more dependent on being told. Sites coast on Google because Googlebot is relentless and forgiving; Bing rewards the sites that show up and introduce themselves, and quietly under-indexes the ones that never did. When I audit indexation for clients, the Bing coverage gap is routinely a multiple of the Google one, on the same site, with the same content, and the owners are always surprised, because no report they read had any reason to mention it.
The checklist is an afternoon, which is what makes the neglect indefensible now. Verify Bing Webmaster Tools, which can import your Search Console setup in a few clicks. Submit the sitemap. Turn on IndexNow, the push protocol that tells Bing about new and changed pages the moment they publish instead of waiting for a crawl; most CMS platforms and CDNs now support it natively, and it converts your indexation from something you hope for into something you initiate. Then read the indexing report and fix what it complains about, because Bing tells you exactly what it cannot see, in plainer language than Google ever has. The click is migrating into the answer, and the answer draws from whichever index the assistant is wired to. You want to be in all of them, and there are only two that matter.
The ads case stood on its own
The paid side carries its own quiet argument, and it predates the AI story entirely. Microsoft Ads auctions clear cheaper than Google's in most categories I run, sometimes thirty to fifty percent cheaper for equivalent queries, because the demand side of the auction is thinner while the humans on the supply side are just as real. The audience skews professional, older, and monied, the default-browser population of corporate desktops and new PCs. And it remains the only place you can layer LinkedIn profile targeting, job function, industry, company, onto live search intent, a combination B2B advertisers claim to dream about and mostly decline to buy. Import your Google campaigns, adjust bids for the thinner auction, and the account runs itself alongside the main program at a better margin. That was true before ChatGPT existed. Few believed it then either, which was fine, because the arbitrage belonged to the few who did.
Bing did not get good. It got load-bearing, and load-bearing infrastructure does not care whether you respect it. Fifteen minutes in a portal you have never opened is the cheapest visibility buy of 2026, and the fact that it still is, three years into the AI search era, tells you how slowly this industry updates a habit.