Delivery logs extension allows you to extend sending logs with profile data and segment code coming from workflows. This information can then be used in Dynamic Reports, and lets you keep a snapshot of some information at the sending time of a delivery. There are 2 more use cases :
Export extended broadlogs with "frozen" data: As a marketer, I would like to export all the profiles where segment code equals "A" (coming from the workflow engine).
Segmentation on "frozen" data: As a marketer, I would like to retarget all profiles who have won 1000 loyalty points since the last sending or where segment code was equal to “A”.