You use Muse to create and update a website. You use Business Catalyst to host it. You must install and use Muse to publish your free sites. Though you can create and edit pages in Business Catalyst, Adobe recommends that Muse users create and edit pages in Muse. Use Business Catalyst only to host the pages. The reason is that if you edit a page in Business Catalyst, your changes are not reflected in Muse. The changes could be overwritten the next time you update the page in Muse and upload it to Business Catalyst.
I had questions about integrating Muse with Business Catalyst. I had spent hours researching, learning, and dealing with certain issues with my forms. I got a 30 second answer that would have saved me those hours spent and will save me hours in the future. Great support and very knowledgeable!Brad B.