Virtual International Authority File (VIAF) is like a library card catalog. It's an online directory that helps you find out more information about things like books, movies, authors, and actors. It collects information from different libraries around the world, so if you want to learn more about a certain book or movie, you can look it up in VIAF and get information from different libraries all in one place. VIAF is like a search engine for libraries, so you don't have to go to each library to find out information.