In my client's Google Analytics account, we've come across an enigmatic source labeled "login.microsoftonline.com/referral." Up until the year-to-date of 2022, this source has been associated with revenue exceeding $10+. Despite our efforts, our Microsoft Ads representative was unable to shed light on the origin of this source.
Considering the substantial revenue figure, it seems unlikely that this traffic is solely generated from referral sources. Therefore, there is a possibility that a portion of this traffic could be attributed to paid search or email campaigns. Furthermore, we suspect that it may be stemming from a Microsoft product with the capability to integrate seamlessly with Google Analytics.
Have any of you encountered a similar situation? Are you aware of Microsoft products that offer integration with Google Analytics? Your insights and experiences would be greatly appreciated.