Pros and Cons of a separate image server (e.g. images.mydomain.com)?

Question

We have several images and PDF documents that are available via our website. These images and documents are stored in source control and are copied content on deployment. We

Answer 1

Pros:

-load balancing

-isolating a different functionality

Cons:

-more work (when you create a page on the main site you would have to maintain the resources on the separate server)

Things like XSS is a problem of code not sanitizing input (or output for that matter). The only issue that could arise is if you have sub-domain specific cookies that are used for authentication.. but that's really a trivial fix.