I recently read Hosting Controller version 10 release notes and found this new integration of Auto-signup feature.

• HC Auto Signup online shopping cart New!

  
Do you have documentation available for it? How to embed this functionality on my own company's website as I want to offer my Hosting Packages on my official website and not inside HC control panel.
 

Complete documentation regarding AutoSignup can be seen at the following link:
http://help.hostingcontroller.com/hc10/default.aspx#pageid=auto_signup
 
If you wish to manually setup AutoSignup on your business website, you may follow the instructions mentioned in the kb article .