A boosted post is one that is pushed into more news feeds of people who like your page and their friends, or people that you target based on location, age, gender, and interests. You have the option of boosting any existing post on your timeline, and when you have a post that is getting more engagement than most of your others, Facebook will even suggest boosting it to get even better results. In LinkedIn, it's called a Sponsored Update.
Boosted posts, as it is called in Facebook and "promoted tweets" as it's called in Twitter, are ideal when you want to get better engagement, such as getting more likes or shares for a certain post, or when you want to draw in more page likes by promoting a post that showcases the type of content that people would see if they followed your page. If you are trying to achieve a specific goal through social marketing such as sending people to your website, a paid advertisement will give you better results.
Boosted posts are paid advertising, but they appear in your timeline or news feed. Both Facebook and LinkedIn give you the option to create an ad, based on your objective and includes options such as sending people to your website or raise attendance at your event. You can choose to pay per click, or spend a certain amount each day to get the results you are looking for and you can check your Ads Manager to see how your posts are performing and make adjustments.
These separately displayed ads appear to the right side of the main news feed. These ads also allow you to be far more selective when it comes to your audience so you will be able to choose better targets and make the most of your advertising budget. Another benefit that ads have over boosted posts is the ability to test a number of different ads at once so you can get a better idea of which online marketing tactics are working and which to scrap.
Whether you are boosting a post or paying for an ad, Facebook does not allow more than 20% of the post's image to be text so be careful when sharing links to ensure that the image that is pulled is not too text heavy. If you are not sure which paid format is best for your online marketing goals, remember that boosted posts work better when promoting within Facebook and LinkedIn, and display ads work better when you are trying to draw people away from it.