Autoclaved Aerated Concrete (AAC) is a lightweight, highly versatile, and environmentally friendly building material. It is produced by combining cement, water, and a foaming agent, and then curing it under high-pressure steam to create a cellular structure. AAC offers exceptional thermal insulation, fire resistance, and acoustic properties, making it suitable for a wide range of construction applications. This abstract provides a concise overview of AAC, highlighting its attributes, production process, and its positive impact on sustainable construction practices.