This guide addresses the challenges organizations face when modernizing their legacy Environmental, Health, and Safety (EHS) management systems. It outlines the common issues related to outdated tools that hinder operational efficiency and compliance. The document emphasizes the need for a strategic approach to modernization, beginning with a clear understanding of business problems rather than focusing solely on technology. It presents five key questions organizations typically encounter during this process, offering recommendations for each. These include maintaining day-to-day operations during transitions, evaluating the total value of new systems, ensuring reliable data through coherent data foundations, preparing for AI integration, and fostering user engagement to drive adoption. The guide stresses the importance of incremental changes, effective communication, and continuous user involvement to ensure that modernized systems meet the evolving needs of the business and its workforce.