Yes it is possible to upload your products from Shopify store to amazon website please follow the guidelines by application developers.
You can start selling on Amazon once you’ve connected your Shopify store to your Amazon seller account.
You can check Shopify Apps to Sell on Amazon
Spreadr App ‑ Amazon Importer
Amazon & eBay by Codisto
Zonify ‑ Amazon Dropshipping
Hopefully it helps.