Sharing the world's aspiration to transform itself into a carbon neutral society, Mitsubishi Heavy Industries, Ltd. (MHI) Group has declared "MISSION NET ZERO" for achieving net-zero CO2 emissions by 2040. Our approaches for realizing decarbonization and energy-saving features in our products/systems are based on not only developing new technologies and creating ecosystems through energy transition, but also making the products and social infrastructures smarter. In this special edition featuring the service technologies, our initiatives are presented in terms of how to introduce smart social infrastructures under the circumstances in which products are getting more and more advanced/complicated. Specifically, these include: practice of customer-oriented and solutions-based services throughout the product life cycle, which helps us to shift our trading focus from products to services; maximization of customer value with services in which AI (Artificial Intelligence) and digital technologies are made use of; and examples of improvement of service technologies.