PDF+or+XPS+what+is+the+difference?

PDF or XPS what is the difference?

An accurate description according to Microsoft of a PDF (Portable Document Format) files, are a way of sharing and saving information that preserves document formatting. During online viewing or printing, the information retains the format that you intended. Data in the file cannot be easily changed. The PDF format is also useful for documents that will be reproduced by using commercial printing methods.

Again, according to Microsoft, XPS (XML Paper Specification) files, are a way of sharing and saving information that preserves document formatting. During online viewing or printing, the information retains the format that you intended. Data in the file cannot be easily changed.

So what is different?

PDF can be opened in both Adobe Acrobat Reader and the web browser. Whilst the XPS can only be opened in web browser.

That is all I know, anyone else who can add to the variances ? 