Check out my video about Google Ads Custom Segments. One of the audience options you have for Google Ads Performance Max, Display, Video, and Discovery campaigns is Custom Segments. You can create custom segments by putting together Interests, Purchase Intentions, and Keywords searched in the Google search engine. In addition, you can use a list of websites that people frequently visit and mobile apps as well. Custom Segments can be created and managed through your Google Ads Audience Manager.