The overall purpose of this paper is to carry out an in-depth analysis of the concept of Facebook ads. Facebook is a popular marketing platform for almost any kind of good or service. However, the most unique aspect of Facebook ads is that they can target specific customers that have a higher probability of purchasing the product advertised. Facebook ads can target different sets of customers depending on age, geographical locations, hobbies, gender etc with the help of algorithms designed to do perform precisely according to requirements. Hence it acts as the perfect marketing tool for any business. We will discuss concepts in detail further in the paper.