What are SKU count and its impact on the Tagalys dashboard?

A stock keeping unit (SKU) is a unique identifier assigned to a product by the merchant. The number of SKUs in your store influences the time taken to perform daily updates to the trending score and other performance metrics used in merchandising. It also increases the time taken to synchronize the product catalog from ecommerce platform to Tagalys dashboard. 

Here is an image of how the SKU count is listed in the Tagalys dashboard