Distribution

distribution action of sharing something out among a number of recipients.
distribution companys, are responisble for;

• marketing
• set the release date
• method of exhibition( thee platform to release it on ) 

Types of distributers are;

• Waners Brothers 
• Disney 
• Paramount
• 21st Century Fox
• Sony
• Universal
• Lionsgate 

Marketing

Platforms distributer use to market their films are social media sites such as Youtube, Instagram, Twitter.
They also use forms such as Posters. The use of a trailer is also used as a form of marketing as it can be displayed as a advertisement for TV and or websites. They are also "Guenilla Marketing" websites.