Cold aisle containment systems use doors at aisle ends, ceiling panels or lids above racks, and structural frames to create enclosed zones where cold supply air flows directly to IT equipment intakes. This has significant disadvantages as there is no separation. Aisle containment strategies, specifically hot aisle containment (HAC) and cold aisle containment (CAC), have become essential for separating hot and cold airflows, preventing mixing, and optimizing airflow management. When implemented correctly, they improve efficiency, reduce energy consumption, extend equipment life, and enhance overall reliability. This approach transforms traditional hot aisle/cold aisle.