There are two wildcards that you can use when you create a URL-based audience to define a wider range of URLs. These wildcards are standard and used across a number of platforms, so it's worthwhile to take the time to understand how they work.
* (an asterisk) is a wildcard symbol that stands for any amount of letters or characters in your URL.
? (<a question mark) is a wildcard symbol that stands in for a single variable character. This is particularly helpful if you are not sure if a certain phrase or word appears in lowercase or uppercase, as URL audiences are case sensitive.