## 5 Conclusions, Limitations, and Future Research Directions  
The main objective of this study, which has been elaborated on and analyzed in various sections of this paper, was to evaluate the impact of electronic procurement technologies on green procurement practices at ISO 14001-approved organizations. The results showed that most of the variables involved in the research framework, as well as E-sourcing, E-ordering, E-reverse auction, and E-informing, have significantly affected the green procurement practices and supply chain performance. The enactment of E-procurement technology, particularly on the ISO 14001-certified firm, was found to have a significant consequence on green procurement practices. This research examines the relationship between digital procurement and sustainable procurement practices from the perspective of the triple bottom line (TBL) pillars of sustainability. In the present study, a theoretical framework is developed to precisely define the underlying mechanisms of digital technology's impact on the procurement process. In addition, the framework contributes to E-procurement adoption research by examining how the E-procurement technology can positively impact green procurement and pursue the benefits of digital procurement adoption, especially by emphasizing the importance of sustainability and green supply chain management [37]. Environmental and climatic change is a National Priority Area (NPA) that can benefit from this study. The Global Carbon Dioxide Emissions Report 2016 shows that Malaysia is one of the eight major carbon dioxide emitters, contributing 0.7% of the world's carbon dioxide emissions. According to the Twelfth Malaysia Plan (2021-2025), under the Environment Sustainability Strategy; Goal 3: Good Health and Well-Being; Goal 11: Sustainable Cities and Communities; and Goal 13: Climate Action are among the Sustainable Development Goals, the research findings might serve as a basis for future discussions about elevating awareness, understanding, and capabilities of low-carbon production at all levels. Malaysia's vision of a sustainable future is ambitious, but it depends on cooperation among all stakeholders. This environmental concern may be solved by implementing green procurement utilizing E-procurement technology in manufacturing industries in Malaysia. The reason for this is that they do not entail the use of paper, minimize waste production and packaging, lower greenhouse gas emissions, as well as air pollution, and allow the development of eco-friendlier products. In addition, this work adds to the research cluster of frontier technologies and advanced industrialization. With the application of modern technologies in E-procurement, buyers may acquire products and services through a variety of internet-based opportunities. With several top-down initiatives and policies, the Malaysian government is pushing the industry towards more sustainable practices. The country's government is expected to be a role model in the future global energy market, especially in developing nations. In further research, in various business processes for sustainability in green procurement, and also improved supply chain performance, the use of electronic technologies, as well as the internet of things (IoT), EDI, digital procurement, RFID, and blockchain, may be explored. Moreover, to gain a deeper understanding of the E-procurement and green procurement drive, future studies should emphasize services industries such as healthcare, aviation, and hospitality, and examine how it changes among industries. Subsequently, validation of the model in other states or nations with distinct cultures, demographics, and socioeconomics can be performed in future research. It may be of interest to conduct future research on the relationship between multidisciplinary E-procurement technologies, supply chain integration, and the outcomes of the organization, including expense reduction, profitability, goods and services quality, etc.