We will talk in this post regarding using metafields from your Shopify store to adding more data for ebay & amazon listing.
As a Shopify store owner, at some point, you would probably want to extend your sales to Amazon. It is quite easy when your products are known to Amazon and exist in the Amazon catalog. But what if your products are totally new, and no one has ever sold on Amazon before? You would need to create a new listing on Amazon. Surely, you can do it on your Seller Central account directly. However, when you have dozens of products on Shopify, you might want to think of other ways to send new products to Amazon.