Volusion is a hosted store platform, but it offers no API to publish blog posts into it. Sorank still gives you a fully automated SEO blog on your own domain.
Volusion's API covers products, orders and customers, not blog publishing. There is no endpoint to push an article into a Volusion blog, so instead of pasting every post by hand, you let Sorank host the blog for you.
Sorank publishes and hosts your articles on your own subdomain, for example blog.yourdomain.com, linked from your Volusion store. Every post strengthens your domain authority.
Full walkthrough: Host your blog on Sorank.
Add a Blog link in your Volusion store menu pointing to your hosted blog subdomain. Visitors move smoothly between your store and your blog, and Google indexes both under your domain.
Can Sorank publish directly into Volusion? No. Volusion has no public API to create blog posts, on any plan.
Do I keep my content if I leave? Yes. Export your whole blog any time and re-import it elsewhere. Your content is always yours.
Does the hosted blog cost extra? No, it is included in your Sorank subscription.