As an e-commerce merchant, chances are you're selling on a variety of platforms outside of Shopify. Moving your products from platforms like Amazon and Etsy to Shopify can be extremely time-consuming, especially if you have a large product catalog or many variants. Store migration apps allow you to import products in bulk so you don't have to go through the pain of uploading products one by one. These apps also usually allow you to bulk edit products for upload and sync Shopify orders with Amazon fulfillment.