The 5th BIS-STE entitled “Smart and Sustainable: The Synergy of Green Technology and Digital Society” is a leading annual event that brings together experts, professionals, researchers, and policymakers from various fields to discuss and explore the common ground between green technology and digital society. The conference aims to encourage collaboration, knowledge sharing, and innovation to address pressing challenges related to sustainability, technological advances, and the digital transformation of society. Sustainable development and technology’s role are becoming an ongoing discussion. Green technology focuses on developing and utilizing environmentally friendly and sustainable solutions to reduce the impact of human activities on the environment. It covers various sectors, including renewable energy, waste management, water conservation, sustainable transportation, and eco-friendly manufacturing processes. On the other hand, Industry 4.0 is characterized by integrating advanced technologies such as the Internet of Things (IoT), artificial intelligence (AI), big data analytics, robotics, and automation in industrial processes. Industry 4.0 revolutionizes manufacturing and production by enabling more efficient, flexible, and connected systems, increasing productivity and economic growth. Simultaneously, digital society encompasses the broader societal transformation driven by digital technology. This digital includes using digital tools, platforms, and networks that shape various aspects of our lives, including communication, commerce, governance, healthcare, education, and entertainment. Recognizing the potential synergies between these domains, the 5th BIS-STE seeks to explore how integrating green technology and digital society can contribute to sustainable development. The conference provides a platform for researchers, practitioners, and policymakers to present and discuss the latest research findings, innovative solutions, best practices, and policy framework.