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Reach- In advertising and digital marketing analysis, Reach refers to the total number of unique people or households exposed, at least once, to a medium during a given period. Reach should not be confused with the number of people who will actually be exposed to and consume the advertising. In other words, reach is the number of unique users who saw the digital advertising at least once.
Return on investment (ROI) - A financial term called return on investment (ROI) compares the profit or return from an investment to its cost. To calculate it, divide the acquisition's net profit by the initial investment amount, then represent the result as a percentage.