RationalR Suite AnalystStudio is a suite of tools that assists project team members in business modeling and requirements management activities. Analysts have the critical responsibility to understand the problem and define requirements for the system to provide a solution to that problem - the overall goal is to create a system that really solves the customer's needs. To achieve that goal, a combination of problem analysis, business modeling, data modeling and requirements management is earned out to ensure that needs from all stakeholders are appropriately taken into account.This paper concentrates on AnalystStudio's functionality as it pertains to the activities of the business analyst as defined in the Business Modeling workflow of the Rational Unified Process.The support for business modeling provided in AnalystStudio is not intended to replace business process modeling tools. Rather. AnalystSmdio addresses a particular subset of modelers for whom the primary issue is bridging the communication gap between business modeling and systems design.