Microsoft Rewards
I don't know for what reason or when I opted in, but I had 10 points, and you need at least more than 1000 points to redeem.
Since the Rewards started to show on different locations:
- Settings Header Banner
- in Windows Search
- on the Edge new tab page
I opted out of the Rewards here:
https://account.microsoft.com/rewards/optout?confirm=false.