This article provides a practical, engineering-focused overview of stacked layer cages made with aluminum-zinc alloy coated steel, explaining how the tiered structure improves space utilization in modern layer houses while maintaining stability, load capacity, and long-term durability. It breaks down key structural elements—frame reinforcement, tier arrangement, manure management interfaces, and egg collection alignment—and shows how optimized stacking helps increase birds per square meter without compromising daily operation or flock welfare. The article also highlights the aluminum-zinc alloy coating’s corrosion resistance and weatherability, linking these properties to reduced rust risk, easier sanitation, and consistent performance in humid, ammonia-prone poultry environments. Supported by field observations and measurable performance indicators, it summarizes the cage system’s value for decision-makers and procurement teams in terms of hygiene management, environmental compliance, and production efficiency, and closes with actionable selection and maintenance tips for stable, cost-effective upgrading.