@GRMacGeek is correct. Ecwid provides widgets to embed into websites, but, unless you’re willing to dive into the Ecwid CSS and API, you can’t control the look and feel, and the functionality of your store as you can with the Axyn Ecwid Stacks. Additionally, as the designer, you keep control of the website look, if you so desire, even if the user makes changes in the Ecwid dashboard, it will not affect the website created with the Axyn Ecwid Stacks. The web designer decides, what level of control the user will have on the look and feel of the site.
With the Ecwid stacks you can control the color and use local fonts (ttf, Wolff, etc), for nearly every Ecwid element in the store.
With the Ecwid stacks you can easily enable SEO friendly URLs. In fact, query based SEO friendly URLs are enabled by default.
You can control how the main tiles, category tiles, and product display, or if they are to display at all.
You can control the style of the search and shopping bag widgets. You can control how it’s shapped, color, border, corner radius etc. You can even add an image background to inner content of the search field (v2.0).
And much much more.
And in version 2, dynamic events stacks will be introduced. They will allow the user to be queried (w/ modal dialog) on a specific trigger, if they would like, for example, to add a product to the cart. And, if so, how many, and voila, the product is in the cart with a newly calculated total.
Please checkout the Axyn Ecwid Stacks product page for more info.