No! For security and performance reasons, we do not support direct integration and embedment of the entire registration flow on external websites. Neither do we allow for putting the ticket page in an iframe.
If you have already set up your own event website or want to use an external website to promote your event, you can easily do so! The direct link option for your ticket sales will provide a very light and neutral user experience for your ticket buyers, while you can focus your efforts on presenting your tickets and offers in the best way possible.