Situated between the very large Rational Unified Process and the very small eXtreme programing approach, the ICONIX process makes use of the Unified Modeling Language. The authors overview this process which draws on all these methodologies, and bring reality to theory via a running Internet Bookstore example and exercises. Appendices include part of a model report (available in full from an auxiliary Web site), and use case documentation. A supporting workbook and CD-ROM are also available. Both authors are with ICONIX Software Engineering, Inc.