Thank you for using our services.
Sitefinity supports using external pages. You can include them in your sitefinity project as you would any other web application. Do you have a specific question regarding how to implement this?
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items