You can keep your domain at GoDaddy if you would like, no domain transfer necessary. You would just need to update the nameservers your domain points to, which we would provide to you after your web hosting purchase. GoDaddy can help you with it, or we can too, if you provide your GoDaddy username/password.
Please feel free to email if you have any further questions, or need help deciding on the UltimateWB software version right for you.
Compare UltimateWB software versions: https://www.ultimatewb.com/compare-uwb
Software Purchase: https://www.ultimatewb.com/buy
Web Hosting Purchase: https://www.ultimatewb.com/domain-names-web-hosting
All UltimateWB web hosting packages come with free professional installation service of your purchased UltimateWB software onto your web hosting.