DALLAS and SUNNYVALE, CA — October 23, 2000 - i2 Technologies, Inc. (NASDAQ: ITWO), the leading provider of intelligent e-business and marketplace solutions, and UMC (NYSE: UMC), a global leader in semiconductor foundry services, announced today the live implementation of i2 TradeMatrix Demand Planner™, Supply Chain Planner™ and Demand Fulfillment™ in the UMC foundry's newly released My UMC customer portal (my.umc.com).

With this fully integrated planning and execution system, UMC is able to improve customer service significantly while reducing supply chain costs.

UMC has implemented i2 TradeMatrix™ Solutions to accomplish several of its most critical e-business objectives. The resulting system is designed to allow visibility across multiple fabs and assembly/test facilities, corporate-wide demand allocation and resource rationalization, intelligent planning that enables optimal usage of capacities and automated multiple-fab sourcing decisions, and rapid response to order inquiry and promising processes to improve customer services.

"We are now able to match customer order requirements in real-time to available capacity across multiple fabs, providing an optimal sourcing solution. This is far superior to the capabilities of the conventional decision support tools used in the industry," said Chris Bettis, vice president of UMC USA who leads Central Planning and Customer Service for the USA sales office. "We are able to create competitive advantages by incorporating i2's industry-leading semiconductor supply chain solutions with UMC's unique foundry knowledge and expertise."

With the integrated planning environment powered by i2, UMC's critical demand management supply planning and order fulfillment business processes are designed to operate on an event-driven basis. This enables UMC planners to identify chain-wide problems that impact customer orders immediately, and resolve these issues quickly and effectively. As a result, it is anticipated that order confirmation lead-time will be reduced from days to hours or minutes.

"We are excited that leading semiconductor foundry UMC, has adopted i2's solutions as the backbone for its build-to-order fulfillment capability. The rapid deployment and value creation across UMC's global operations will enhance its world-class foundry services," said Bruce Jacquemard, i2 senior vice president, High Tech Business Unit. "With these systems in place, UMC has now built the foundation to meet its e-business objectives."

i2 is creating real value for its global e-business customers through its i2 TradeMatrix solutions, content and marketplace platform. i2 TradeMatrix allows businesses to create both private and public marketplaces, while improving the efficiencies of all participants. i2 provides a wide variety of collaborative e-business services for both the early stages and the next generation of e-business adoption, with each service supported by decision optimization, transaction management and content management solutions. Founded in 1988, i2's mission is to deliver $75 billion in value to its customers by 2005. i2 is headquartered in Dallas, has more than 5,000 employees and maintains offices worldwide. Visit i2 at www.i2.com.

i2 and the i2 logo design are registered trademarks of i2 Technologies, Inc. i2 TradeMatrix, Trade Matrix, i2 TradeMatrix Demand Planner™, i2 TradeMatrix Supply Chain Planner™ and i2 TradeMatrix Demand Fulfillment™ are trademarks of i2 Technologies, Inc.

This press release may contain forward-looking statements that involve risks and uncertainties, including the customer's ability to implement i2 solutions successfully or to achieve benefits attributable to i2 products. For a discussion of factors which could impact i2's financial results and cause actual results to differ materially from those in forward-looking statements, please refer to i2's recent filings with the SEC, particularly the Form 10-K filed March 22, 2000 and Form 10-Q filed August 14, 2000.

Note From UMC Concerning Forward-Looking Statements
Some of the statements in the foregoing announcement are forward looking within the meaning of the U.S. Federal Securities laws, including statements about future outsourcing, wafer capacity, technologies, business relationships and market conditions. Investors are cautioned that actual events and results could differ materially from these statements as a result of a variety of factors, including conditions in the overall semiconductor market and economy; acceptance and demand for products from UMC; and technological and development risks.