Should I move booking engine to sub domain or keep it on its own domain?

[Equatorites]

Hi SEOMOZers

One of our client websites is getting a new site. Currently the booking engine sit's on its own domain. I have been asked if we should move the booking engine onto a sub domain.

Something tells me we should do this however, I do not have any fire power to back this up.

Should I move it and if so why?

Thanks for your MOZers

Gav

[YannickVeys]

So now it's: www.infoaboutbooking.com and www.bookingengine.com ?

and you want: bookingengine.infoaboutbooking.com ?

The only real argument I can think of is speed. That booking engine has to be very very fast. So it needs his own server. (Free from the webserver that hosts the main domain) Usually something that is hosted on another server is hosted on another domain or subdomain (although you can host 1 domain on multiple servers...)

Using a subdomain vs a different domain then the main domain is a non-discussion. Because in SE's eye's they are both different websites. So it doesn't really matter. Especially because there isn't any content on the booking engine website. (I assume) It's just booking. So think only about your users. Make it very fast and very userfriendly and let the tecchies figure out how to measure stuff between the (sub)domains. (conversion, turnover, etc.)

[Equatorites]

Thanks for your response Yannick, its much appreciated.