One way to increase the SEO potential for your online store is to add a blog. Each blog post can target a new keyword relevant to your audience. And each keyword gives you another chance to rank. When done right, it can attract visitors to your store and educate your potential customers about your niche.
WordPress, as a content management system, was built for blogging. That's why you'll always have blogging functionality built in for your online store when you use the WooCommerce WordPress plugin.
BigCommerce also has a built-in blogging feature. You can advertising database import those posts into BigCommerce using the Blog Sync app if you have an existing blog.
The difference is that BigCommerce only offers basic blogging functionality. You get:

Tags to organize blog posts by topic, which you would use instead of blog categories
The ability to write posts as drafts and publish them later.
Integrated social sharing
You won't get an RSS feed in BigCommerce. Why does this matter? RSS feeds allow you to automatically generate newsletters with your latest posts and help you syndicate your content easily.
If you want to use BigCommerce to tackle the ecommerce side of things, but still want to use a WordPress website for your blog to take advantage of the more advanced features, you can do that too. Just be prepared to spend some time tweaking your system settings and making use of subdomains.
Whether you use WordPress or BigCommerce, the key to blogging success is creating valuable content that promotes and optimizes for search.