The ASCE DEI Best Practices Resource Guide is a collaborative effort by the MOSAIC executive team, highlighting the importance of diversity, equity, and inclusion (DEI) in civil engineering. It acknowledges the contributions of various individuals and organizations in developing the guide, which aims to integrate DEI principles into ASCE activities. The guide emphasizes that civil engineers must consider diverse perspectives to effectively solve societal problems. It outlines MOSAIC's role in promoting an equitable and inclusive culture within the profession and details five key categories for implementing DEI strategies: Events, Leadership and Engagement, Strategic Partnerships, Assessment, Accountability and Training, and Communication.%0aThe text outlines the ASCE (American Society of Civil Engineers) Diversity, Equity, and Inclusion (DEI) Best Practices Resource Guide, which aims to promote equitable engagement and achievement within the organization. It includes sections on fostering strategic partnerships, assessing and training for DEI initiatives, and ensuring inclusive communication. The development of the guide involved collaboration among task teams, gathering existing resources, identifying gaps, and incorporating feedback from reviewers. The guide is intended to be a dynamic document, updated regularly to reflect ongoing changes in DEI discourse and research.