## 6 Summary and Perspectives  
Global industrial production significantly contributes to greenhouse gas emissions, with aluminum manufacturing standing out for its high energy intensity. This issue is compounded by rising demand due to economic growth and population increases. Tackling the environmental impact of aluminum traditional production is critical, as global warming, largely driven by CO\({}_{2}\) emissions from industries, manufacturing, and transportation, remains one of the world most urgent challenges. PBF-LB/M additive technology has emerged as a transformative solution for advancing sustainability by optimizing material use, incorporating industrial waste, and reducing energy consumption and emissions. Despite its benefits, AM energy-intensive nature highlights the need for further advancements in energy efficiency to achieve its full sustainability potential. This review examined how PBF-LB/M can address environmental challenges by enhancing material efficiency, minimizing waste, and optimizing energy use in aluminum-based alloy production. Aluminum lightweight and recyclable properties, combined with the design flexibility and efficiency of PBF-LB/M, establish it as a key driver of sustainable innovation. The paper explores strategies to improve PBF-LB/M sustainability across the entire process chain, from feedstock production to post-processing. * The production of metal powders for PBF-LB/M is energy-intensive, with environmental impacts varying by fabrication methods and feedstock sources. Conventional techniques like gas and water atomization or plasma-based processes balance energy use, particle morphology, and costs. Emerging methods, such as cold mechanically derived powders and UniMel(r) plasma technology, offer more sustainable alternatives by enabling high-yield, low-energy production and efficient recycling of feedstocks. Incorporating recycled materials into powder production further decreases CO\({}_{2}\) emissions and conserves natural resources. Additionally, the reuse of PBF-LB/M powders across multiple build cycles, supported by rigorous quality control measures, including blending, sieving, and property monitoring, enhances sustainability and economic viability. * PBF-LB/M revolutionizes sustainable manufacturing by integrating lightweight materials with advanced designs. Innovations in tailored alloy compositions and modifications to traditional alloys address challenges like hot cracking, enabling the production of components with superior strength, ductility, and thermal stability. Structural design techniques, such as topology optimization and lattice structures, enhance material efficiency, reduce weight, and improve performance, key benefits for aerospace and automotive applications. Process optimization methods, including DoE and single scan track analysis, reduce defects, energy consumption, and material waste while ensuring dense, durable parts. Additionally, advancements like parameter optimization, multi-laser systems, polar coordinate designs, and real-time melt pool monitoring enhance productivity, quality, and component lifespan. * Integrating tailored post-processing techniques with the PBF-LB/M process is critical for achieving sustainability and improving material performance. Traditional heat treatments, often energy-intensive, are being replaced by accelerated heat treatments that reduce processing time and energy consumption without compromising material properties. Recent advancements propose shorter, more energy-efficient treatments that optimize mechanical properties while minimizing environmental impact and production costs. Additionally, reducing surface post-processing through parameter optimization and hybrid manufacturing approaches further enhances efficiency and sustainability. In conclusion, PBF-LB/M holds substantial potential to drive sustainability advancements across industrial and mobility sectors.