Can I use my own web address? Or do I need to use wxyz.businesscatalyst.com?

You can use your own web address, also called a URL or domain name. You can either redelegate your domain and use our DNS servers or you can create an A-Record in your existing DNS service to point your domain to your new site at Business Catalyst - it's up to you. For instructions on this, see our knowledge base article. Please note that if you are a Premium Partner and wish to use our rebranding features you will need to redelegate the domain to us.