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Rapid urbanization and mounting environmental concerns are driving the growing global demand for sustainable and affordable housing. To meet these challenges, it is important to create new building materials that are more energy-efficient, last longer, and are better for the environment. This paper presents an innovative lightweight foamed concrete (FC) sandwich panel system for façade cladding, specifically designed for hot climates, providing a practical solution to both housing and environmental issues. The system consists of a fiber-cement outer layer and a foamed concrete core, merging the advantages of both materials to optimize thermal insulation, structural strength, and cost-effectiveness. The foamed concrete's lightweight properties, combined with the strength of the fiber-cement exterior, reduce heat transfer, enhancing thermal efficiency, an essential feature for regions with extreme temperatures. By minimizing the need for artificial cooling, the system significantly boosts energy conservation, which is particularly critical in hot climates. In addition, the sandwich panel offers excellent acoustic insulation, mitigating the effects of urban noise pollution. The system's sustainability is another key benefit, as it utilizes environmentally friendly materials and low-energy manufacturing techniques, leading to a reduced carbon footprint. The durability of the panels is further ensured by the fiber-cement skin, which is fire-resistant, moisture-resistant, and highly resistant to harsh environmental conditions. Moreover, the lightweight nature of the panels reduces transportation costs and the carbon emissions typically associated with construction. Successful implementation of the system in diverse countries like Iraq, Turkey, and Indonesia has demonstrated its effectiveness in different climates, with improvements in thermal performance, structural stability, and environmental impact. The system's adaptability makes it well-suited for large-scale housing projects, offering flexibility in design, faster installation, and shorter construction timelines. In conclusion, the foamed concrete sandwich panel system represents a promising advancement in sustainable construction, offering an efficient, cost-effective, and environmentally friendly solution to the growing housing needs in hot climates.