In the context of advertising and marketing, a user is an individual who consumes or interacts with content, products, or services. Users can include customers, clients, prospects, or members of the general public, and they can access or engage with advertising through a variety of channels, such as websites, social media, mobile apps, or email. Users are often the target of advertising campaigns, and advertisers use a variety of techniques and technologies to reach, engage, and convert them. User data, such as demographics, interests, behaviors, or preferences, can be collected and analyzed by advertisers to help them understand and target their audience more effectively. User experience, or the way that users interact with and respond to advertising, can also be an important factor in the success or failure of a campaign.