Bank One Switches to Corillian's Voyager Platform; Will Make Customers' Online Experience ''Easier, Faster and Better''.

Business Editors/Technology Writers

CHICAGO and PORTLAND, Ore.--(BUSINESS WIRE)--March 1, 2001

Corillian Voyager and Microsoft Windows 2000 Platform

Deployed On Time and Within Budget

Bank One (NYSE:ONE) announced today that it has enhanced the online experience of its more than 700,000 www.bankone.com customers by successfully migrating them to the Voyager operating platform of Corillian Corp. (Nasdaq:CORI).

The Voyager platform provides bankone.com customers with real-time access to their accounts as well as enhanced bill payment and presentment capabilities, customized sorting and tracking options and the ability to download statement data to personal financial management software like Microsoft Money(R) and Quicken(R).

"This move is all about the service we can provide to our customers," said Bruce Luecke, general manager for bankone.com. "Corillian's Voyager platform has capabilities and functionality that will make a customer's experience at bankone.com easier, faster and better."

Corillian's Voyager replaces the Integrion platform at Bank One.

Since its startup in June 1997, bankone.com has become a vital channel for Bank One customers.

-- About 20 percent of all Bank One checking account holders are banking
online.

-- An additional 35,000 Bank One customers sign on to bankone.com for the first
time each month.

-- More than 137,000 Bank One customers now pay their bills at bankone.com.

In addition, bankone.com allows customers to apply for:

-- home-equity loans and receive preliminary approval in

about 50 seconds.

-- a mortgage and receive preliminary approval in

minutes.

-- up to $100,000 in credit for their small business and

have their money that day.

The move to Corillian's Voyager platform will continue to enhance the capabilities of bankone.com.

Corillian Voyager -- The Operating System for eFinance(TM) -- is a high-performance platform that allows for the delivery of financial services to customers over the Internet. Voyager provides a link between a financial institution's legacy host system and its consumers, using Internet browsers, personal financial management software and Internet-ready wireless devices. Voyager's open architecture design allows an institution to quickly integrate emerging technologies, deploy the platform in-house or in a secure data center, and customize the entire Internet banking presentation to its customers. Built on Microsoft's Windows 2000 and SQL Server platform, Voyager provides financial institutions with a scalable, robust enterprise solution that meets the growing demands of the eFinance industry.

"The Bank One implementation was a tremendous success for Corillian," said Ted Spooner, chief executive officer of Corillian Corporation. "Bank One had some unique needs in the conversion process to our Voyager platform, but our teams delivered a comprehensive, scalable solution in 237 days. Also, Voyager's openness and scalability provides Bank One with a foundation for their eFinance initiatives as they look to add other functionality and services."

"More and more world-class financial institutions like Bank One are turning to Corillian's Voyager platform and Microsoft's Windows 2000 and SQL 2000 when they require an agile, scalable, secure platform for mission critical computing," said Edmund Muth, FSG Director for Business Development, Microsoft Corporation. "Bank One also will benefit from the cost effectiveness of Windows 2000 in transaction processing, a benefit proven over and over again in industry-standard benchmarks and in real world engagements such as this."

About Corillian Corporation

Based in Oregon, and with international offices in Europe and Asia, Corillian Corporation is an award-winning provider of eFinance-enabling software for the financial services industry. Built on the Microsoft Windows 2000 platform, Corillian applications support Internet banking, bill delivery and payment, brokerage, customer relationship management, enhanced data aggregation, and small business transactions. Voyager can be deployed on-site at the financial firm or at a secure data center. Corillian technology also enables Open Financial Exchange (OFX) access by finance management software packages such as Quicken(R), QuickBooks(R) and Microsoft(R) Money. For more information about Corillian Corporation, visit the company's Web site at http://www.corillian.com.

About Bank One

Bank One Corporation is the nation's fifth-largest bank holding company, with assets of more than $265 billion. A leader in the retail market, Bank One operates more than 1,800 banking centers and a nationwide network of ATMs. Bank One can be found on the Internet at www.bankone.com

Matters discussed in this release may include forward-looking statements that involve risks and uncertainties, and actual results may be materially different. Factors that could cause actual results to differ include the risk that that Corillian is not successful in developing or acquiring new products and that Corillian encounters significant errors in its software installed at BankOne. Other risks include those stated in Corillian's reports and other documents filed from time to time with the Securities and Exchange Commission including its report on Form 10-Q for the quarter ended September 30, 2000.

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