The article discusses the significance of measuring return on investment (ROI) for virtual events, especially in the context of the COVID-19 pandemic which has shifted focus from in-person to online gatherings. It outlines key factors for calculating virtual event ROI, such as registration vs. attendance, revenue, and engagement metrics, and emphasizes the need for event management software to consolidate data from various platforms. Additionally, it presents three methods for calculating ROI, highlighting the complexities involved compared to traditional event ROI assessments.