This document provides an introduction to cross-cultural understanding (CCU). It defines CCU as dealing with understanding the similarities and differences between cultures, and how people from different cultures communicate and share values. It discusses why understanding cultural differences is important to avoid judgment and perceiving others based only on our own perspective. The document also outlines key dimensions of diversity, and explains why CCU is increasingly important due to trends in globalization, changing demographics, and rising numbers of expatriates. It concludes by outlining steps to develop diversity competence, including increasing awareness, knowledge, skills, and taking action to be more inclusive of other cultures.