Hi @Bmac32 ,
You can find a third party order fulfillment provider who integrates to shopify to ship your orders, if so your supplier need to send the inventory to the fulfillment center first, when orders come in, the fulfillment provider will ship products directly to your customer on your behalf.
In addition, the more straightforward way is to partner with a dropshipping supplier who integrates to shopify, like crov dropshipping.
@Bmac32 If you are still looking for a Dropshipping service that sources your products and also linked to your shopify store, we can help you out. Please visit our site for more information.