Google owns the volume. Microsoft Ads owns the LinkedIn-based targeting Google cannot touch. Most B2B teams need both, not one.
Most B2B advertisers treat Google Ads as the only search channel and ignore Microsoft Ads (formerly Bing Ads) entirely. That is usually a mistake. Google has far more reach, but Microsoft Ads reaches a B2B-skewed, often older and higher-income desktop audience at a lower cost per click, and it offers LinkedIn-based targeting Google cannot match. For B2B, the real answer is rarely either-or. This compares them on reach, audience, cost, and targeting.
Reach and Search Volume
Winston Francois: Google Ads has dominant search market share, so it offers far more volume and the ability to scale spend against high-intent B2B keywords that simply have more searches behind them.
Competitor: Microsoft Ads has much smaller search share, which caps total volume, but that audience is concentrated on Windows desktops and Office-ecosystem users who skew toward business contexts.
Verdict: For scale and volume, Google is unavoidable as the primary channel. Microsoft Ads cannot replace it, but its smaller, business-skewed audience is additive rather than redundant.
Audience Composition
Winston Francois: Google reaches everyone, which is powerful for scale but means more competition and a broader, less business-concentrated audience on any given B2B keyword.
Competitor: Microsoft Ads skews toward an older, higher-income, desktop-and-Office audience that over-indexes on business decision-makers, which can make B2B traffic surprisingly qualified.
Verdict: If audience quality per click matters and you want to reach business buyers efficiently, Microsoft Ads often punches above its size for B2B. Google delivers the volume but with a broader mix.
Cost Per Click and Competition
Winston Francois: Google's auction is more competitive on valuable B2B keywords, which pushes cost per click higher, though its scale and conversion data can still produce strong returns.
Competitor: Microsoft Ads typically has fewer bidders on the same keywords, so B2B advertisers often see cheaper qualified clicks and better efficiency on a smaller budget slice.
Verdict: For efficiency on a fixed budget, Microsoft Ads frequently delivers cheaper B2B clicks. For maximum reach even at higher cost, Google is the volume engine – which is why splitting budget across both usually beats concentrating in one.
Targeting Capabilities
Winston Francois: Google offers powerful intent, audience, and in-market targeting backed by enormous data, and integrates tightly with the broader Google ecosystem and Analytics.
Competitor: Microsoft Ads offers LinkedIn profile targeting – company, industry, and job function – which is uniquely valuable for B2B and not available natively in Google Ads.
Verdict: For B2B specifically, Microsoft Ads' LinkedIn targeting is a genuine differentiator that Google cannot match, while Google's data depth and ecosystem integration remain the broader strength. The targeting edge alone justifies testing Microsoft Ads for B2B.
Which Is Right for You?
Run Google Ads as your primary search channel if you need scale, volume, and the ability to put real budget behind high-intent B2B keywords – it is non-negotiable for most B2B programs. Add Microsoft Ads if you want cheaper qualified clicks, a business-skewed audience, and LinkedIn-based company and job-function targeting that Google cannot offer. For most B2B advertisers the right move is not to choose but to run both, with Google as the volume engine and Microsoft Ads as an efficiency-and-targeting layer that often delivers strong incremental return on a modest budget. The mistake is ignoring Microsoft Ads entirely because it is smaller – for B2B, its audience quality and LinkedIn targeting make it worth a test it rarely gets. This is exactly the kind of channel-mix call that should sit inside a broader performance marketing plan rather than get decided channel-by-channel in isolation.
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Frequently asked questions
Should B2B companies run both Google Ads and Microsoft Ads?
For most B2B advertisers, yes. Google provides the volume and scale you cannot get elsewhere, while Microsoft Ads adds cheaper qualified clicks and LinkedIn-based targeting Google lacks. Because campaigns can often be imported directly from Google into Microsoft Ads, testing the second channel is low effort relative to the incremental pipeline it can produce. Run a modest budget slice on Microsoft for at least 60 days and compare cost per qualified lead against your Google benchmark before deciding whether to scale it up or stay Google-only.
Why is Microsoft Ads sometimes better for B2B than Google?
Microsoft Ads reaches an audience that skews older, higher-income, and concentrated on Windows desktops and the Office ecosystem, which over-indexes on business decision-makers. It also offers LinkedIn profile targeting by company, industry, and job function – a capability Google does not have natively. Combined with lower competition and cost per click, that makes it surprisingly effective for B2B even though it is smaller.
Is Microsoft Ads cheaper than Google Ads for B2B?
Generally yes on a cost-per-click basis, because there is less advertiser competition in the Microsoft auction for the same keywords. That lower cost, paired with a business-skewed audience, often makes Microsoft Ads more efficient for qualified B2B clicks. It will not match Google's volume, but it can deliver better cost efficiency on the budget you allocate to it.
How do you decide how much budget to shift from Google to Microsoft Ads?
Start small and let cost per qualified lead make the call, not a fixed rule of thumb. Move a modest slice of your existing Google budget into Microsoft Ads, keep the same target keywords, and measure lead quality through the same attribution and measurement setup you already use for Google. If Microsoft's cost per qualified lead beats your Google benchmark, scale it; if it does not, you have validated staying Google-heavy without guessing.
