Every week I talk to advertisers who either ignore Microsoft Ads entirely or just dump their Google campaigns into it and call it a day. Both approaches are leaving money on the table. Let's fix that.

If you've been running paid search for any amount of time, you already know Google Ads is king. It's not even a competition in terms of volume. But the second you write off Microsoft Ads — formerly Bing Ads — as irrelevant, you're making a strategic mistake that your competitors are quietly benefiting from. I've seen it firsthand across dozens of accounts.

This isn't a "both are great, you should use both!" fluff post. I'm going to walk you through the real differences, where each platform wins, which businesses should lean one way or the other, and — critically — why a copy-paste strategy from Google to Bing is one of the worst things you can do to your account performance.

First, Let's Talk About the Numbers

Let's be clear about scale, because this matters for your expectations before you even set up a campaign. Google controls roughly 90% of global search engine market share. That translates to somewhere north of 14 billion searches per day as of early 2025. Microsoft Bing sits at around 3.9% global market share and over 900 million searches per day.

In the U.S. specifically, Bing commands around 27–28% of the desktop search market. On desktop. That's not a number you ignore — especially if your audience skews toward professionals sitting at a work computer.

How Similar Are Google Ads and Microsoft Ads?

Honestly, more than people realize. If you already know your way around Google Ads, the learning curve on Microsoft Ads is pretty gentle. Here's what they share:

• Both run on a keyword-based pay-per-click auction model
• Both use Responsive Search Ads (RSAs) as the primary ad format
• Sitelink, callout, structured snippet, and call extensions — present on both
• Smart bidding strategies: Target CPA, Target ROAS, Maximize Conversions
• Remarketing and audience-based targeting layers
• Shopping campaigns available on both platforms
• Conversion tracking and pixel-based measurement
• One-click campaign import from Google Ads into Microsoft Ads

The interfaces feel similar. The logic is similar. Your keyword research process is largely the same. If you've been running Google Ads for years, you could be live on Microsoft Ads in an afternoon. That accessibility is a feature — but it's also where advertisers go wrong.

Where They Diverge: The Real Differences

The Audience Targeting Difference Is a Big Deal

This is where Microsoft Ads has a card that Google flat-out cannot play: LinkedIn data integration.

When Microsoft acquired LinkedIn in 2016 for $26.2 billion, it quietly handed B2B advertisers one of the most powerful targeting tools in paid search history. Inside Microsoft Ads, you can layer LinkedIn profile data — job title, company size, industry, seniority level — directly onto your search campaigns. You're not just bidding on keywords; you're bidding on keywords and only showing to, say, HR directors at companies with 200+ employees who are actively searching for HR software. Google cannot do that. Full stop.

Microsoft Ads reaches approximately 63 million U.S. users who are not reachable through Google Ads. These users skew professional, desktop-based, and higher-income. Ages 35–54 make up approximately 55% of Bing's user base, and nearly 40% have household incomes above $100,000.

Google's audience, by contrast, is broader, younger, and mobile-first. Ages 18–34 make up a significant portion of Google's traffic. That's perfect for e-commerce, consumer apps, food delivery, fashion, entertainment, and anything targeting younger buyers with shorter purchase cycles.

Budget Considerations: Where Your Dollar Goes Further

Your budget goes further on Microsoft Ads. Bing Ads average CPC is approximately $1.55, roughly 30% lower than Google Ads. In hyper-competitive industries like legal and insurance, that gap is dramatically wider. The average CPA on Bing Ads is around $41.44 — about 30% lower than the Google Ads average. With roughly 20% fewer advertisers competing, your ad positions are more attainable and more stable.

That said, lower CPC only matters if there's enough search volume to generate meaningful clicks. A commonly recommended starting point is to allocate roughly 15–20% of your PPC budget to Microsoft Ads while keeping the bulk on Google. For B2B advertisers or those in finance, real estate, and legal — you might find that ratio shifting as your data matures.

Keywords: Same Logic, Different Reality

Your keyword strategy starts from the same place — intent mapping, match type structure, negative keyword lists. But execution needs to account for platform differences. On Google, you can run broader match types with Smart Bidding and let the algorithm work. The competition means your keyword strategy needs to be surgical.

On Microsoft Ads, the lower volume means you need to focus on high-intent, tightly themed ad groups. Focus on high-intent, exact match keywords that reflect your best-performing queries from Google. Avoid overly broad terms. Your negative keyword list from Google is gold — bring it over immediately.

Which Industries Belong Where?

Google Ads is the right primary home for:

• E-commerce — fashion, beauty, consumer goods, and anything with Shopping Ads
• Mobile apps and SaaS with younger buyer personas
• Local service businesses relying on Google Maps and Google Business Profile
• Entertainment, food delivery, and hospitality
• Businesses needing massive reach and brand awareness at scale

Microsoft Ads is especially powerful for:

• B2B software and SaaS — the LinkedIn targeting here is transformative
• Financial services, insurance, and wealth management
• Legal and professional services
• Real estate — real estate has the third-highest conversion rate on Bing Ads at 5.13%
• Healthcare and medical devices
• Home improvement and contractors — professionals researching at their desk
• Luxury goods and high-ticket products targeting affluent buyers

Industries with the highest average conversion rates on Bing Ads include careers and employment (6.81%), finance and insurance (5.57%), and real estate (5.13%). If you're in any of those verticals and not running Microsoft Ads, I genuinely want to ask you why.

Stop. Bing Is NOT a Google Copy-Paste Platform.

This is the section I most want you to read, save, and share with every PPC manager in your org. Microsoft Ads has a one-click import tool from Google Ads. It's convenient. It's also dangerous when treated as a complete strategy.

1. The audience is fundamentally different.

Your Google ad copy is optimized for a younger, mobile-first audience. Microsoft's audience is older, desktop-based, and more professionally oriented. An ad that converts brilliantly on Google may land flat with a 47-year-old IT director in Edge. Your messaging and CTAs need to be reconsidered — not just migrated.

2. Match type behavior differs.

Broad match on Bing can cast a very different net than you expect, often pulling in less qualified traffic. Your match type mix and bidding logic should be reviewed and adjusted — not assumed to be identical to Google.

3. Search term data is different.

The queries triggering your ads on Google are not the same on Bing. Volume is lower, user behavior differs, and branded searches skew higher on Bing. Your negative keyword strategy needs to be built from actual Bing data — not assumed from Google history.

4. You're not leveraging what makes Bing unique.

If you copy your campaigns over and don't add LinkedIn audience layers, you've missed the entire point. That targeting capability is Microsoft's differentiator and the main reason sophisticated B2B advertisers see higher lead quality from Bing than Google. You can't import that from Google because Google doesn't have it.

5. Budget and bidding logic need recalibration.

Google's Smart Bidding has been trained on vastly more data than Microsoft's. Be more conservative with automation early on. Start with manual or enhanced CPC, build your conversion data, then gradually introduce automated bidding as the account matures.

6. Quality Score signals are calculated differently.

Ad Rank and Quality Score on Microsoft have their own algorithm. An ad with a great Quality Score on Google isn't guaranteed to perform the same way on Bing. Test fresh, even if it's painful.

So, Which One Is Best for You?

For most established advertisers, the answer isn't "which one" — it's "both, but intentionally." Start with Google to build your keyword and conversion data. Then take your validated, high-intent performers to Microsoft Ads where you'll face less competition and lower CPCs. Google gives you volume and breadth. Microsoft gives you efficiency and precision. Together, they cover the full paid search landscape.

Bottom Line

Google Ads isn't going anywhere. Google's search advertising revenue is projected to exceed $230 billion in 2026. If you want volume, brand reach, and the most sophisticated automation in paid search, Google is your foundation.

But Microsoft Ads in 2025 is not the afterthought it was five years ago. Microsoft Ads revenue grew 13.4% between 2024 and 2025 and is expected to reach $19.53 billion by 2026. The platform is actively being invested in, AI-powered through Copilot, and sitting on top of a LinkedIn data asset no other search engine can touch.

The question isn't really Google vs. Bing. It's whether you're leaving performance on the table by not being strategic about both. Build each platform's strategy on its own terms. Your audience isn't the same on both. Your copy shouldn't be either.