In order to setup Google Tag Manager tags for Bing/Microsoft, we'll need to have a Bing UET ID

Step 1: Login to Bing Ads

Step 2: Select Tools > UET Tag

Step 3: Your UET ID will be in the Tag ID Column

Example: 1111111

Don't have a Bing tag created? You can create one by selecting the green Create button available on this page.

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Does Bing's interface look different than what's listed above? Bing might have updated their steps! If that's the case, follow Bing's Where do I find the UET tag tracking code in Microsoft Advertising article instead.