PIMO stands for Plan, Implement, Monitor and Optimize. The PIMO model describes the steps or phases within the relationship with a supplier as it matures over time, as described from the perspective of the customer (or purchaser). The relationship starts with "planning" to determine the best way to implement the product or service in order to attain the desired outcomes, then moves to the "implement" stage where the product is installed, configured and customized and users are trained. In the "monitor" stage the product or service is being used and the results of this utilization are measured to ensure that value is being attained. Finally, these measurements are used to help "optimize" how the product/service is being used to maximize value realization.