Three layers of comparison.
1. Audience composition. The Microsoft Search Network audience is older, more affluent, and more B2B-weighted than Google's average.
2. Feature parity. Microsoft Performance Max closed the search-term transparency gap in May 2026 (Search Term reporting, Landing Page reporting, URL conversion reporting all now live). Copilot diagnostics provide root-cause analysis Google Ads does not match natively. The LinkedIn-profile targeting layer (three filters confirmed by Microsoft: company, industry, job function; per-market availability not publicly documented, must be verified inside the account) layers B2B identity onto search keywords when it is exposed in your account.
3. Cost. Microsoft cost-per-click is typically lower than Google on the same B2B keywords (US: $1.40-$2.60 B2C, B2B/finance/legal versus Google's premium). The right answer is usually 'both, with 70-85 percent to Google and 15-30 percent to Microsoft' for US/CA/AU/UK accounts; SG/MY is Google primary with Microsoft as 5-15 percent top-up.