# User Segment Designer

You can target visitors with Web content, automatic e-mails, and discounts by defining and using groups called user segments (as in segments of a population). Instead of being groups of hard-coded users, user segments are groupings of characteristics, such as gender, the type of browser being used, and date or time information. If users match the characteristics, they are automatically and dynamically members of that user segment. When user segments are used in content selectors and campaigns, users belonging to those user segments are targeted with the Web content, e-mail, or discounts you determine.

You can use the user segment in content selectors and campaigns.

To create a user segment, see Creating User Segments.