Something enticing is exciting and intriguing. Enticing things are tempting and make you want to have them.
When a thing is enticing, it's kind of like it's saying "You want this, don't you? Yes you do!" The goal of almost all advertising is to be enticing — to try to entice you to buy the product. Any small glimpse or snippet of something that you like is probably enticing. Menus are another thing that are supposed to be enticing — you should want to order the food. If a movie trailer isn't enticing, then it didn't do its job.