Attribution & Analytics
Microsoft UET
Microsoft Universal Event Tracking is Microsoft Advertising's website tag for collecting visitor actions and connecting them to advertising activity. A shared UET implementation can support conversion goals, remarketing audiences, automated bidding signals, event-based optimization, and selected integrations such as Microsoft Clarity, with configuration and consent managed by the advertiser. It is essential for organizations running Microsoft Ads campaigns to websites and is commonly paired with server-side or enhanced conversion options when browser tracking alone cannot provide sufficient signal coverage.
What it does
Microsoft Universal Event Tracking is the pixel and conversion tracking system that powers Microsoft Advertising campaign measurement. A single UET tag placed once across every page of a website records site activity and sends it to Microsoft Advertising for conversion attribution, audience building, and automated bid optimization. Once the base tag fires, specific conversion goals — purchases, form submissions, page visits, or custom events — are configured inside Microsoft Advertising without modifying the tag code again. UET also drives Microsoft's remarketing audiences, letting advertisers segment past visitors by pages viewed or events completed and retarget them across Bing search and the Microsoft Audience Network. The tag supports Google Tag Manager and Shopify native integrations for simplified deployment.
Where it fits
UET is the measurement foundation for Microsoft Advertising — without it, automated bidding strategies cannot optimize and remarketing audiences cannot be built.
Core features
- Single-tag implementation supporting all Microsoft Advertising conversion goal types
- Conversion event configuration inside Microsoft Advertising without re-tagging the site
- Remarketing audience creation based on page visits, events, and custom URL parameters
- Enhanced conversion support for improved match rates using first-party customer data signals
- Automated bidding integration — Target CPA and ROAS strategies require UET conversion data to function
- Google Tag Manager template and native Shopify app for simplified deployment
Best for
- Advertisers running Microsoft Advertising search or audience campaigns who need conversion tracking and remarketing
- E-commerce sites wanting to activate Microsoft's automated bidding strategies with reliable purchase signals
Beginner notes
- Install the UET tag sitewide before configuring any conversion goals; adding only a conversion snippet to the thank-you page first is a common mistake that breaks event-level tracking later.
- Test tag firing with the UET Tag Helper Chrome extension Microsoft provides — it shows exactly which events fire and what data they carry before campaigns go live.
- UET and Google's global site tag can coexist on the same pages without interfering with each other, so running both measurement systems in parallel is straightforward.