DuckDuckGo browser allows Microsoft trackers due to search agreement
The privacy-focused DuckDuckGo browser purposely allows Microsoft trackers on third-party sites due to an agreement in their syndicated search content contract between the two companies.
DuckDuckGo is a search engine that prides itself on its privacy by not tracking your searches or your behavior while performing searches. Furthermore, instead of building user profiles to display interest-based advertisements, DuckDuckGo will use contextual advertisements from partners, like Ads by Microsoft.
While DuckDuckGo does not store any personal identifiers with your search queries, Microsoft advertising may track your IP address and other information when clicking on an ad link for “accounting purposes” but it is not associated with a user advertising profile.
Source: DuckDuckGo browser allows Microsoft trackers due to search agreement