ROI and ROO Scheme are methods that help companies decide whether they are getting value from their marketing or not. ROI stands for Return on Investment and it is an important metric that helps companies to determine if they are getting the right return on their advertising spend. ROI can be calculated by using a variety of different metrics, including: cost per acquisition, cost per lead, cost per sale, and so on. ROO stands for Return on Outreach. This is a metric used to measure the effectiveness of an advertiser's outreach efforts in generating leads or sales. It is calculated by dividing the number of leads generated by the amount spent on outreach activities like ads, email campaigns, etc.