A PIM tool stores product data in a structured and logical format. Products are given limitless attributes, making them easier to find and highly searchable. Rich content, such as product descriptions and emotive imagery, make products more appealing to customers. Conversions increase, returns decrease.
The difference a between an integrated PIM and your ecommerce platform is the ability to import product information from anywhere, and publish tailored product information anywhere. For example, am eBay product title is very different to the product title on your ecommerce website. Similarly, different products have different names in different markets (e.g. trousers, pants, slacks, etc). A PIM tool can manage this information in the one place, giving you one single source of truth for all your product content.