Capture cheaper search inventory on Microsoft Ads.
Microsoft Advertising (Bing Ads) hit $13.9B in fiscal 2025 search-ad revenue, up 21% year over year. CPCs run 33–40% lower than Google Ads on identical keywords. And every Microsoft Ads campaign now reaches Bing.com, Yahoo Search, AOL Search, DuckDuckGo, Ecosia, and the Microsoft Audience Network — a 1B+ MAU graph that Copilot is rapidly turning into the second AI-first ad surface on the internet. Capconvert's Ad Program for Bing is built around the cross-engine reach Microsoft uniquely offers.
How Microsoft Advertising decides whose ad runs.
Microsoft Ads runs an auction structurally similar to Google's — bid × Quality Score = Ad Rank, ML-driven bidding strategies, RSA creative, Performance Max equivalents. The differences are economic. Lower auction depth means lower CPCs (33–40% below Google) and faster Quality Score gains. Audience demographics skew older, more US-Microsoft-ecosystem, more desktop. And the same account distributes ads across the entire Microsoft search graph — Bing.com, Yahoo Search, AOL Search, DuckDuckGo, Ecosia.
Copilot has reshaped the inventory in 2024–2026. Searches routed through Copilot show ads at +73% CTR and +16% conversion rate versus traditional search. Performance Max campaigns running on Copilot inventory deliver 4.2× more conversions. The next-gen ad surface is forming inside Microsoft's AI products faster than inside Google's, and Microsoft Ads is the access layer.
The Microsoft search graph and the inventory it covers.
Microsoft Ads is the only ad platform whose inventory spans four distinct search engines plus an AI assistant plus a display network. Each layer is configured separately.
Bing.com. Microsoft's owned search engine. ~7.6% US share, 12.21% US desktop, 1B+ MAU globally. Foundation of every Microsoft Ads campaign — disabling Bing.com targeting is rare and unusual.
Search partners. Yahoo Search, AOL Search, DuckDuckGo, Ecosia, and a long tail of contextual placements. By default ads serve across all of them; toggleable in campaign settings. Search-partner CTR and CVR vary widely by partner — DDG converts higher on contextual queries; Yahoo skews older and higher AOV in finance/news.
Microsoft Audience Network (MSAN). Native and display placements across MSN, Outlook, Microsoft Edge, Microsoft Start, and the open web via Microsoft's DSP. Audience targeting layered on top of the same first-party LinkedIn and Microsoft account graph that powers Copilot.
Copilot inventory. Sponsored answers and ad placements within Microsoft Copilot conversations across Edge, Windows, Bing.com, and Microsoft 365 surfaces. The fastest-growing ad surface in the Microsoft ecosystem. Performance varies dramatically — Copilot users tend to be higher-intent and more transactional.
LinkedIn integration. Microsoft Ads can layer LinkedIn profile targeting (job title, company, industry, seniority) onto search and audience campaigns. The only ad platform with native LinkedIn data — high-leverage for B2B advertisers.
What drives Ad Rank on Microsoft Ads.
Microsoft Ads doesn't publish auction weights. Across hundreds of campaigns and the partner-network distribution, the signal hierarchy below holds. These are the levers we work for every Microsoft Ads engagement.
Why running on Bing reaches more than Bing.
Microsoft Ads is the only ad platform that distributes a single account across four major search engines. A Microsoft Ads campaign reaches Bing.com (~7.6% US search), Yahoo Search (~2% US), AOL Search, DuckDuckGo (~2.4% US), and Ecosia — ~12% of US search inventory in aggregate, plus the Microsoft Audience Network reaches another ~50% of US internet users.
Most accounts treat search-partner placements as a wildcard — accept the default (on) or click it off without measurement. Both leave money on the table. The right approach is treating each partner as a separate audience cohort: measure CVR per partner, exclude underperformers at the campaign level, and lean into the partners that out-convert Bing.com for your category.
The cross-engine spillover is also why optimizing Microsoft Ads is closer to multi-channel campaign management than single-engine search. The same ad runs against four audiences with different demographic profiles, four QS reweights, four CTR baselines, and four conversion-window patterns. Account structure has to accommodate that.
What works in Microsoft Ads creative — and what's different from Google.
Microsoft Ads creative mechanics are nearly identical to Google's at the surface — RSAs, pinning discipline, asset density, ad extensions. Underneath, three differences materially shape what works.
Exact-match keyword density. Bing's reranker leans more literal than Google's. RSAs that include the exact-match keyword in pinned positions outperform ads that rely on intent-match alone. The ad-relevance component of Quality Score rewards literal matches more aggressively here.
Copilot creative variants. Sponsored answers in Copilot serve longer, more conversational copy than SERP ads. Accounts running Copilot inventory benefit from creating Copilot-specific ad variants — declarative, fact-dense, citation-friendly — alongside the SERP RSA bundle.
LinkedIn-targeted creative. When LinkedIn audience layers are active, ad copy that speaks to professional context (job title, industry-specific pain points) outperforms generic copy. The audience layer changes what the asset should say.
UET, Universal Event Tracking, and what Microsoft sees.
Microsoft Ads conversion tracking runs on the Universal Event Tracking (UET) tag — Microsoft's equivalent to Google's gtag. The mechanics are familiar; the gotchas are different.
UET deployment. One UET tag per Microsoft Ads account, deployed via Tag Manager. Same hygiene checks as Google — page coverage, conversion goal mapping, value passing. Most accounts inherit a 2018-era setup that's missing 30%+ of conversions.
Server-side UET. Microsoft supports server-side conversion via the UET API. Captures conversions browser-side trackers miss to ad blockers, ITP, and consent rejections. Same impact as server-side Google Tag Manager — typically recovers 15–35% of lost conversions.
Enhanced CPC + Smart Bidding signal quality. Microsoft's bidding strategies (Maximize Conversions, tCPA, tROAS) are only as good as the conversion data feeding them. Same logic as Google — clean signal beats tighter strategy every time.
LinkedIn audience overlap. Microsoft's first-party LinkedIn data feeds attribution at a granularity Google can't match for B2B — actual professional context attached to converters. Sophisticated B2B accounts use LinkedIn-attributed conversions as a separate optimization signal.
Cross-engine attribution. Bing reports DDG / Yahoo / AOL conversions separately when partner reporting is enabled. Most accounts skip enabling it — and lose the partner-level data that would otherwise drive optimization.
How we run Microsoft Ads for clients.
Most Microsoft Ads engagements run alongside a Google Ads engagement — the work overlaps significantly, but the Microsoft-specific layer (search-partner segmentation, LinkedIn audiences, Copilot creative, partner attribution) is where the lift comes from. Five-step methodology.
Account audit + Google mirror. Existing UET coverage, account structure review, Quality Score baseline, conversion signal hygiene. If no Microsoft account exists, we mirror the Google account first, then optimize Microsoft-specific.
Tracking foundation. UET deployed via Tag Manager (server-side where ITP loss is significant), conversion goals scoped, value passing wired in, partner-level reporting enabled.
Search-partner architecture. Each search partner (Yahoo, AOL, DDG, Ecosia) measured as a distinct cohort. Underperformers excluded at campaign level; over-performers given dedicated bid adjustments.
LinkedIn + Copilot layering. Where the buyer is B2B, LinkedIn audience signals layered on Search and Audience Network campaigns. Copilot inventory enabled and creative variants tested on Copilot-eligible queries.
Bid + budget management. Manual CPC where partner cohorts diverge sharply; Smart Bidding where conversion signal is rich. Monthly partner-level optimization, quarterly creative refresh, ongoing search-term harvest.