+Return On Investment (ROI) is a performance measure used to evaluate the efficiency of an [Investment](/wiki/investment). It quantifies the financial gain or loss in relation to the initial cost, serving as a key metric for assessing project viability and [Asset](/wiki/asset) performance.
+## See also
+- [Profit](/wiki/profit)
+- [Cost](/wiki/cost)
+- [Finance](/wiki/finance)
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