Answer: Marketing
Explanation:
Mobile Marketing is probably the fastest growing method of marketing in the world today as the world sees more people using smartphones every year than the year before.
Mobile Marketing involves methods that target the mobile phone of a user so that they may have extended exposure to the advert. They can include sending special offers to customers who have opted in to receive discounts via SMS text message.
They can also involve advertising on apps like Angry Birds and media apps. This is why some apps are free because the developers earn revenue from mobile advertising.
