In this digital era, the adoption of digital technologies is transforming business processes and helping organizations to achieve goals both domestically and globally. The role of digital businesses' communication in the B2B supply chain has become increasingly extensive. Digital technologies are helping companies to streamline their transactions more safely, enhance collaboration, and build trust among partners. Digital technology tools help businesses to improve sustainability by enhancing visibility, enabling real-time information, and facilitating product tracking throughout the entire supply chain. Earlier research explored digital tools in supply chains, but there is limited research on how these tools support business communication in supply chain sustainability. The study addresses this gap by conducting a systematic literature review of 102 journal papers from the Scopus and Web of Science databases. Out of the 732 articles initially screened, 102 were chosen, which is a selection rate of 13.9 %. The data show that the number of publications rose by more than 60 % between 2022 and 2024. This shows that audience interest is being increased in using digitalization to make supply chains sustainable. This paper outlines how digital technologies such as blockchain, ERP, cloud, and RFID help industries reach digital sustainability. The study has also presented real-world case studies of Walmart and Unilever that explain the importance of digitalization in the supply chain. This review suggests a noticeable increase in research on implementing digital tools in sustainable supply chain processes.