In the parlance of digital marketing, advertisers are commonly referred to as sources, while members of the targeted ads are commonly called receivers. Sources frequently target highly specific, well-defined receivers. For example, after extending the late-night hours of many of its locations, McDonald's needed to get the word out. It targeted shift workers and travelers with digital ads, because the company knew that these people made up a large segment of its late night business. McDonald's encouraged them to download a new Restaurant Finder app, targeting them with ads placed at ATMs and gas stations, as well as on websites that it new its customers frequented at night.
When starting out, focus on being a generalist. You won’t know what you’re most interested in yet, so building up a general digital marketing skill set will help you hone in on the areas that excite you most. You’ll also be more hireable since a digital marketer who can wear a few different hats is much more useful than one who only knows how to do Instagram ads.