ABSTRACTWork is becoming increasingly com‐puter‐mediated. Performance development is becoming increasingly difficult and expen‐sive due to complexity, change, restructuring, and redefinition of who does work. In the coasumer market place, softw are is emerging with characteristics and behaviors; that actively support performance development while permitting learning. These performance‐centered systems are the next step in the evolution of performance support. Performance Technologists must and will play an active part in both their advocacy and design. Ultimately, no consumer or large‐scale software system should be considered accep table untilday‐one performanceisgenerated for novice performers while still accommodating the requirements of expert