Synergy

Throughout the marketing process of Harry Potter 7, there where many ongoing themes which appeared throughout these Trailers, Magazines and Posters. One of the main ones was the tagline "It All Ends." which is used to signify the end of a global phenomenon. The general theme is along the lines of a massive battle about to be taking place which is shown throughout all 3 types of media.

Another similarity that is show in this marketing campaign for Harry Potter 7 is that all the posters are screen captures from the actual trailers. This shows synergy between both the posters and film trailer, making viewers relate between these two mediums and overall increasing the awareness of this franchise, and film.