IAD means Iterative Application Development
IAD is a softwareontwikkelmethode that sees users and designers as equal partners. IAD does this by dividing a project in small increments, and these parts are developed independently. Each separate part is a pilot, and the various pilots are joined together in the import of the entire project. Because they are all small parts, adjustments can be made quickly, and small part solutions are quickly seen.
A second possible meaning of IAD is: Internet Address detectors. These make it easy for users of MacOS8 to take action on the basis of Internet addresses in documents through An appearing Contextual Menu.