Horizontal Partitioning is a database design technique that divides a large table into smaller, more manageable pieces called partitions. Each partition contains a subset of the rows, based on a specific criterion, such as a range of values or a specific attribute. This approach helps improve performance and makes it easier to manage large datasets. By using Horizontal Partitioning, queries can be executed more efficiently since they can target specific partitions rather than scanning the entire table. This method also enhances data maintenance, as individual partitions can be backed up, restored, or archived without affecting the entire dataset.