e-commersce multi-store solution?

Hello,

I run and manage 12 e-commerce for my clients. I am currently using wordpess and joomla add-ons to manage shopping carts and keep track of inventory and orders. This is really getting out of hand.

I'm looking for a CMS e-commerce platform that allows me to transfer ALL stores to a common management panel. Something like the Shopify or Bigcommerce software. I also need to be able to add more clients in the future.

Two things that I really need is that users should be able …

e-commersce multi-store solution?