This guide focuses on N-Tier mapping, an essential process for understanding multi-tier visibility in supply chains. It defines N-Tier suppliers as those beyond Tier 1 suppliers, emphasizing the importance of mapping these suppliers to manage risks effectively. The document outlines the challenges associated with collecting N-Tier data, including difficulties in obtaining accurate information from lower-tier suppliers and the time-consuming nature of the mapping process. It highlights the interconnectedness of supply chains and the potential vulnerabilities that arise from a lack of visibility into sub-tier suppliers. The guide also discusses the Craft approach to N-Tier mapping, which involves identifying and prioritizing suppliers based on their contributions to the value chain. Additionally, it details the use of data sources to enhance supply chain visibility and the need for ongoing supplier risk monitoring. The document serves as a comprehensive resource for organizations looking to implement effective N-Tier mapping strategies.