After setting your campaign goal and choosing the right platform for your ad, the next step is to plan your ad targeting for your most relevant audience. There are two types of targeting. You can target audience for a specific geographic location and you can also optimize your campaign for a specific device type, operating systems and wireless networks.

Geofencing hinges on the use of a “fence”—a designated area that a marketer sets. Where geo-targeting allows you to get more granular and include or exclude certain users in the target area (based on demographic, for instance), geofencing is a bit more of a blunt object in that you’ll capture all users who move into a certain area. The purpose of creating a geofence is to target communications in a given zone, in a given context—just like geo-targeting, but with greater accuracy. Retail operators who want to catch the attention of shoppers as they pass by a store, for example, might use geofencing.
People are no longer shocked to find elements of personalization embedded into various aspects of advertising, and in fact, have even come to expect it. Think about it this way: When it comes to marketing emails, which are you more likely to open and read—the one addressed to “Dear Customer” featuring generic copy on topics that aren’t relevant to you? Or are you more likely to engage with the email addressed to your name that includes links to blog posts relevant to the industry you work in, as well as items you might like based on your previous purchases? That’s right—you’re going to open and read the email that’s tailored to you.
When using the Keyword Explorer, Ahrefs will also produce the "parent topic" of the keyword you looked up, as you can see in the screenshot above, underneath the Keyword Difficulty meter. A keyword's parent topic is a broader keyword with higher search volume than your intended keyword, but likely has the same audience and ranking potential -- giving you more a valuable SEO opportunity when optimizing a particular blog post or webpage.