The designer is a visual canvas for your site. You build and style pages, and see the result as you work. It's easy to use, for both you and your clients.
The agent chat edits the site with you. It reads your files and proposes changes for you to review. It has a purpous built harness constantly evolving to create and mange the best websites in the world.
The CMS holds your content. Both you and the agent can define collections and edit items easly.
Every change is a tracked in Git for you. To publish your website you can click and connect to Vercel, or point any other modern hosting provider at your GitHub project.