These errors were fixed and back-ported to the original UNIX application. Software help desk calls were substantially reduced. This single source base was a major development requirement and is a major source of cost avoidance in the future. In May 1999, the IRS launched a 60-machine pilot of the new ICP application consisting of approximately 1.2 million lines of code. This was followed by a substantial effort of fixing bugs and back-porting the fixes to the original UNIX code.
Initial testing shows significant performance and reliability improvements in many areas.
The IRS deployed 600 systems to their Dallas office in September 2000, and 700 systems to their Atlanta office in October 2000. As of March 2001, the IRS completed deployment of about 17,000 workstations running Windows NT, and will be completing further expansion after the filing season to an additional 3,500 workstations. The projected 25,000-deployment mark is expected to be reached by the end of 2001. This newly migrated IRS application is currently being scheduled for pilot in April 2001. Outside the 50 United States and Canada, please contact your local Microsoft subsidiary.