[null,null,["Last updated 2025-02-25 UTC."],[[["LookalikeUserlist is created based on a configurable seed of UserLists, allowing you to target users similar to your existing customer base."],["You can control the size of the lookalike audience using the expansion level, which determines how closely the audience matches the seed UserList."],["LookalikeUserlist targeting can be further refined by specifying desired countries using two-letter ISO-3166 country codes."]]],["The core content defines `LookalikeUserlist`, a list of users similar to a specified seed. Key information includes `seed_user_list_ids`, which identifies the source UserList(s); `expansion_level`, dictating the audience size; and `country_codes`, specifying the targeted countries using two-letter ISO-3166 codes. These fields allow users to define the basis and scope of the lookalike audience.\n"]]
