WebObjects Web Services

You may already publish dynamic Web pages based on databases and objects, such as an online catalog or shipping tracking system. Internally, you might use such technology to unite functions from different company entities to be displayed on a single page. For instance, employees might see vacation hours displayed on their paystubs, but the information comes out of a database in human resources, while pay information comes from the payroll department. You can already use WebObjects to create such smart Web pages.

http://www.apple.com/webobjects/web_services.html