Return on Investment (ROI) is a data that shows the return of the investment you make. Fundamentally, ROI shows how much an investment gives you a revenue, in other words it shows the effectiveness of the investment and whether this investment should be continued.

ROI = (Revenue from Investment – Investment Cost) / Investment Cost

ROI is one of the most important data with Conversion Rate. Undoubtedly, if the ROI is over 100%, then a monetary profit / return is available. An ROI of 150% indicates that every 100 million you invested returns to you as 150 million. If this ratio is 75% instead of 150%, then it means that you have gained 75 million for 100 million you have invested and you lost 25%.