Magento 2 Layered Navigation Extension is a filter system, includes multiple variants, and customers will filter out products through the attributes such as color, size, style, material, price, rating, brand, etc. When your store has a large number of products, you need to use Magento 2 Layered Navigation Extension to help customers quickly find favorable products. By providing a richer user experience for your customer, it is particularly well suited for stores that have a lot of variable products or products with a number of attributes.