It’s a fantastic tool for quickly mocking up screens and working out the basic layout and functionality of a web site or application. It’s a simple drag-and-drop interface that allows you to drag widgets onto the screen and define some simple interactions–and it even gives you some simple tools for mocking up web 2.0 interactive functionality.
The great thing about it is it’s quick. You can show your customer (and the software engineers) an interface they can relate to, get feedback from your customer, make changes, and turn it all around in a matter of minutes or hours (instead of days or weeks). What a fantastic way to communicate and work!
It allows for dynamic interaction in an AJAX world. You’re no longer stuck with static screenshots for wireframes. You can actually interact with a page, have panels show and hide based on some actual conditions (like “if this box is checked, show this panel”).
You can make notes about how a page should work as you design it. Sometimes you don’t have time to sit down and put in all the interactions. Axure handles that situation beautifully: with page notes.