Hi mkn1202, I would be happy to answer that for you.
There are 2 parts to SureCart, the platform and the plugin. This is explained on the listing page here in the video and right under the video.
Here is a copy/paste of it from the listing page here:
THE SURECART DIFFERENCE
SureCart is fundamentally different from other WordPress ecommerce plugins that you may have tried, so it’s important to understand the differences.
Platform Based
There are two parts to SureCart, the platform, which is the Ecommerce engine, and the plugin.
The platform is built with the same technology that Shopify, Basecamp, GitHub, Twitter, Stripe and more use. These are all multi-billion dollar companies.
The plugin connects to the platform in real-time taking all the load away from your website and onto our platform that was built and optimized for Ecommerce.
This way you get everything you want with none of the stuff you don’t want. SureCart will not slow down your website, it won’t bloat your database, it’s less likely to have plugin conflicts, and it’s made to work with your caching setup. But the real benefit here is you get assurance and peace of mind because you don’t have to worry about security, storage, or backups.