Shopify is the world's most feature complete ECommerce platform

Whether you love it or hate it, it's here to stay and has the strongest buy in and the greatest reach globally.

The number of templates available for off-the-shelf purchase, or custom designs from base templates, offer the greatest choice for your design.

The scalability of the shopify back end provides assurances that the system will grow as your business does.

The Open APIs provided are on the whole excellent, although there can be some pain migrating from the older REST style to the more modern GraphQL

Mentation provides deep integration with near real time updates (in as much as third party inventory system allow).