Organic traffic is free and is also known as earned traffic. Organic, unpaid traffic comes from a variety of sources including different search engines. Revenue from paid ads comes from ads that companies have purchased on various platforms such as Google Ads, Facebook Ads etc. Paid ads have a cost associated with it. The goal for any company is to get the most revenue possible for the least amount of money spent on marketing. In order to accomplish this goal,it's important to know how you differentiate between your paid ad revenue and your organic revenue so you can make informed decisions about your marketing campaigns. By using a tool like Google Analytics and the source/medium dimension, you can differentiate between the two types of traffic.