All network management teams have two things in common: their budgets are tight and their user communities expect reliable network performance. Financial constraints put all technology investments under a microscope; even technology that ensures network reliability. Depending on an organization’s business model, network infrastructure and overall goals, return on investment (ROI) for network monitoring might be realized in five minutes or over five months. This paper outlines the areas in which network monitoring, mapping and alerting solutions deliver ROI. It discusses how to compare those returns to the costs for achieving them.