In a professional context, a "teaser" is a short promotional piece designed to pique interest without revealing the full story.
Short, 15–60 second clips used to build "hype" for a product, event, or movie launch. Teaser
If you are looking for information on , it is a 2019 film starring Adam Driver. In a professional context, a "teaser" is a
You can view the official teaser trailer on YouTube to get a sense of the film's tone. Marketing & Media Teasers In a professional context