Aerification, also known as aeration, is the process of perforating the soil with small holes to allow air, water, and nutrients to penetrate the roots of plants, particularly in lawns. Aerification helps alleviate soil compaction, improves drainage, and promotes healthier root growth by enabling better access to essential resources. It is typically done using specialized tools, such as aerators, that remove plugs of soil, creating space for air and moisture to enter the soil structure.