Digital Media Buying is the purchase of advertising inventory from any media channels. The goal is to find the right place, time and context to deliver relevant ads to target an audience to increase sales brand awareness or any other irrelevant KPIs. Allowing advisers to target audience on an impression level across the entire Internet. Facebook has become one of the most powerful one of the most successful businesses of our time and they are using artificial intelligence and some of the latest innovations in AI things like machine learning and deep learning to really make a difference in their business and it helps them to really understand their customers and what they are truly interested in. Media Buying for Facebook plays an advantageous role for any brand to successfully launch their campaigns. Facebook being the most popular social media website offers to run ads on specific posts, do sponsored posts and more. Almost every individual has access to Facebook, this makes it the most efficient way of targeting audiences at the right time based on their preferences. Ensuring effective marketing efforts and implying strategic ways of displaying ad creatives have made progress in conversion rates more than ever. It is possible to draw deep insights with AI and thus provide better targeting. An advertising campaign can determine the outcome of a business, it can either be successful bringing desirable revenues or a complete disaster. This is why media buying is incredibly important, it allows to customize the audience, increases conversion rates and run successful campaigns.