> they have been very innovative
Not really there were many solution much better in the market, below had some list with solutions offering much more then list above. It's just that Shopify had investor money to burn to have market dominance through marketing.
Indeed that's visible in their balance sheet that they grow by spending money not due to technological innovations.
They were one of the first with broad API integrations and not just a take or leave it storefront.
They have both REST and GraphQL integrations for the HN type crowd
They have an entire framework for heavily customized storefronts, Hydrogen[0]
They have Shop, their Amazon style discovery equivalent for smaller shops.
They have a good app marketplace for integrations
And a lot more.
[0]: https://hydrogen.shopify.dev/