US 11,836,264 B1
End-to-end tagging and tracking of event signals subject to privacy policies
Ioannis Ioannidis, Longmont, CO (US); Monika Kofler, Boulder, CO (US); and David Mozealous, Golden, CO (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Sep. 1, 2021, as Appl. No. 17/463,762.
Int. Cl. G06F 21/62 (2013.01)
CPC G06F 21/6209 (2013.01) 20 Claims
OG exemplary drawing
 
1. A computer-implemented method, comprising:
determining first event data and second event data associated with a first user, wherein:
the first event data is associated with a first data source; and
the second event data is associated with a second data source;
determining, based on the first event data, the first user is associated with a first segment;
annotating the first segment with first data lineage information comprising the first data source;
determining, based on the second event data, the first user is associated with a second segment;
annotating the second segment with second data lineage information comprising the second data source;
generating a first portion of a segment cache comprising a first mapping of the first data lineage information to the first segment;
generating a second portion of the segment cache comprising a second mapping of the second data lineage information to the second segment;
receiving a first bid request;
determining, from the first bid request, the first user and a first bid context;
determining, based on the first bid context, a first privacy policy is applicable to the first portion of the segment cache;
determining, based on the first privacy policy, that access to the first portion of the segment cache is restricted;
determining, based on the first privacy policy, that access to the second portion of the segment cache is permitted;
determining, based on the second portion of the segment cache, that the first user is associated with the second segment; and
providing a first bid response that includes the second segment.