Is Microsoft Advertising worth it for B2B in 2026?
Microsoft Advertising is a smaller channel with a genuine desktop and professional skew, and the honest problem is that almost no B2B-specific performance data exists to size it properly. I have not worked inside Microsoft, so I will not pretend to platform knowledge I do not have. What follows is only what I could verify, and there is less of it than any advertiser would like.
The case for Microsoft rests on two real things: it reaches desktop searchers that Google-only advertisers miss, and it is the one search platform that can target by LinkedIn profile data. Both are worth taking seriously. Neither comes with the kind of published B2B cost benchmark that LinkedIn or even Google can offer, so this article separates the verifiable facts from the widely-repeated numbers that no primary source supports.
The commercial view of how we run Microsoft Ads, including LinkedIn Profile Targeting, is on the Microsoft Ads service page. This piece is the evidence check behind it.
How big is Microsoft's search reach, really?
Microsoft's search share is small worldwide but meaningfully larger on desktop, where B2B research happens. Independent measurement from Statcounter (July 2026) puts Bing at 4.47% of the worldwide search market across all devices, rising to 8.84% on desktop specifically. That desktop figure is the one that matters for B2B, because business software research is disproportionately a desktop activity.
Microsoft's own numbers are US and PC-focused. Here is what to note, and the caveat that comes with it.
| Metric (Microsoft official, US, PC) | Value |
|---|---|
| Monthly PC searches | 6.4 billion |
| Unique PC users | 109 million |
| PC search market share | 38.1% |
Source: Microsoft Advertising, page dated June 2026, citing comScore.
Read those with care. They are US PC-only figures, and the underlying comScore measurement that Microsoft displays appears older than the page date, so I would treat them as "what Microsoft currently publishes" rather than fresh 2026 measurement. The cleaner, independently verifiable number is the Statcounter desktop share of 8.84%.
Is Microsoft Advertising growing?
Yes, but the growth has decelerated over the past year. Microsoft's own investor materials report that search and news advertising revenue rose $1.6 billion, or 13%, in fiscal year 2025, and increased 20% excluding traffic acquisition costs, driven by higher search volume and higher revenue per search.
The more recent quarter shows the slowdown. In fiscal 2026 Q2 (reported 28 January 2026), search and news advertising revenue excluding traffic acquisition costs increased 10%, up 9% in constant currency. That is still growth, but roughly half the ex-TAC rate of the prior year. For a B2B advertiser, the takeaway is that Microsoft is investing in and expanding this business, but it is maturing rather than accelerating, so do not expect the platform's audience to suddenly rival Google's.
What is LinkedIn Profile Targeting, actually?
LinkedIn Profile Targeting lets you target Microsoft search ads by company, industry, and job function, and that specific capability is genuinely unique to Microsoft. The official Microsoft Learn documentation confirms the three targeting dimensions and one hard limit: you cannot target more than 1,000 companies in a single ad group or campaign.
Now the honest part. Microsoft does not publish a reach number for LinkedIn Profile Targeting, and the uplift figures you will see quoted around the web, specific percentage improvements in conversion rate or click-through rate from using it, trace to aggregator pages citing sources I could not locate or open. I am not going to repeat those numbers, because I could not verify them against any primary Microsoft source, and an unverifiable percentage is worse than none. What is verifiable is the capability itself, which is real and worth using for account-based work, because no other search platform offers professional targeting at this granularity.
Is Microsoft Ads cheaper than Google?
Microsoft Ads is widely claimed to be cheaper per click than Google, but I could not verify that with a 2025 or 2026 primary source, and that matters. The frequently-quoted "Microsoft is around a third cheaper" comparison traces back to aggregator pages that misattribute it, and the major search benchmark reports blend Google and Microsoft campaigns together without breaking out a platform-level CPC. WordStream's 2026 benchmarks, for instance, are based on a blended sample and contain no "Bing is X% cheaper" statement.
So the honest answer is that lower Microsoft CPCs are plausible and consistent with a less competitive auction, but I have no verifiable current benchmark to put a number on it. If a lower cost per click is your reason for testing Microsoft, measure it directly in your own account rather than trusting a figure that no openable primary source stands behind. That is the only benchmark you can actually rely on here.
Where does Microsoft Ads fit in a B2B stack?
Microsoft Ads fits as an incremental, low-effort extension of an existing Google search program, with a professional targeting bonus. The practical path is straightforward: Microsoft supports importing campaigns from Google, so the setup cost of testing it is low, and its desktop-skewed, LinkedIn-targetable audience is a reasonable place to capture B2B search demand that Google-only coverage misses.
I would frame the decision honestly. Microsoft is not a primary channel, and the verified data does not support treating it as one. It is a sensible add-on once your Google Ads program is working, especially if you sell into industries where desktop research and LinkedIn-style firmographic targeting genuinely help, and it pairs naturally with the demand your LinkedIn Ads create. Test it for incremental reach, measure it on your own pipeline, and size it based on what you observe, because the public data will not size it for you.
Frequently asked questions
What is Microsoft Advertising's market share in 2026?
Independent Statcounter data puts Bing at 4.47% of worldwide search across all devices and 8.84% on desktop (July 2026). Microsoft's own US PC figures are higher at 38.1% PC share, but those are US-only and drawn from older comScore measurement.
Is Microsoft Ads cheaper than Google Ads?
Possibly, but I could not verify it with a current primary source. Benchmark reports blend the two platforms, and the widely-quoted "cheaper" figures come from aggregators that misattribute them. Measure the difference in your own account.
What makes LinkedIn Profile Targeting useful for B2B?
It lets you target search ads by company, industry, and job function, which no other search platform offers (Microsoft Learn, 2026). The limit is 1,000 companies per ad group or campaign. Microsoft publishes no reach figure for it.
Is Microsoft Advertising still growing?
Yes, but slower. Search and news ad revenue grew 20% ex-TAC in fiscal 2025 but 10% ex-TAC in fiscal 2026 Q2 (Microsoft investor materials). The business is maturing rather than accelerating.
Should Microsoft Ads be a primary B2B channel?
The verified data does not support that. It works best as a low-cost, incremental extension of a Google Ads program, valued for its desktop reach and LinkedIn Profile Targeting rather than as a standalone lead engine.