This is when the production company has the ownership of the means of production, distribution and exhibition of the film by the same company, because of this they receive all of the profit.
This is where a production company expands into other areas of one industry. This means that the company can develop in a particular area of production or they can buy out another company that deals with these areas.
Synergy is the promotion and sale of a product within films, examples of this would be soundtracks, phones and laptops etc.
There are many advantages to using synergy in films, it can increase the profit made on the film, it enhances the companies image and it can influence public opinion.