Supply Chain Management (SCM) practices and organizational performance are looked at in this study through a detailed case study of GXO Logistics, which became the largest pure-play contract logistics provider in the world when it split off from XPO Logistics in August 2021. The study looks at how modern SCM practices, like automating tasks, integrating technology, and promoting sustainability, help with business efficiency and strategic success. The study uses a mixed-methods approach that includes both quantitative performance measures and qualitative insights from interviews with stakeholders to look at how GXO implemented advanced SCM practices during its most important formative years, 2021–2022. The results show that there are strong links between strategic SCM initiatives and organizational success. For instance, GXO had its best quarterly sales and adjusted EBITDA ever in the fourth quarter of 2021.GXO's quick success shows how good SCM practices can improve the performance of an organization. By the end of 2021, the company will have 195 million square feet of space in about 900 facilities around the world. The study adds to both the theoretical knowledge and practical applications of SCM. It gives logistics companies useful information for improving their operations in a world market that is getting more complicated. According to the results, strategic investments in automation (with 30% of warehouses adopting next-generation innovations), along with environmentally friendly practices and partnerships, make operations much more efficient and help them compete in the market. This study lays out a framework for understanding how modern logistics companies can use SCM techniques to achieve long-term growth and operational success.