LaunchDarkly introduces a bulk user targeting feature that enables users to add, remove, or replace entire user populations by entering lists of user keys or emails. This new feature allows for pasting CSV lists containing thousands of user keys or e-mails, creating user segments locally and adding them to variations, and looking up multiple users at once. The bulk targeting modal can be triggered from the Bulk Edit button or by using Ctrl-V to paste a list of users directly into the Add Users field.