Concord Helps Juno Provide Internet Access to Millions of Subscribers; America's Third-Largest ISP Chooses Concord's SystemEDGE to Increase Uptime.

Business/Technology Editors

MARLBORO, Mass.--(BUSINESS WIRE)--Sept. 5, 2000

Concord Communications(R), Inc. (Nasdaq: CCRD), the market leader in solutions that maximize the availability and performance of e-business infrastructure, today announced that Juno Online Services, Inc. (Nasdaq: JWEB), a leading Internet access provider, uses Concord's SystemEDGE solution to ensure 24x7 Internet access and top-notch services to its millions of subscribers throughout the United States. SystemEDGE maximizes system and application availability by allowing IT staff to preemptively manage and resolve problems before they impact subscribers.

Founded in 1996, Juno provides multiple levels of service, including free basic Internet access, billable premium dial-up service, and (in certain markets) high-speed broadband access. Juno derives revenues primarily from the subscription fees charged for its billable premium services, from the sale of advertising, and from various forms of electronic commerce, making uptime and performance critical issues with bottom-line impact. SystemEDGE quickly detects problems before they impact subscribers, maximizing system and application availability and minimizing service disruptions.

In 1998, after evaluating several other SNMP-based solutions to monitor its IT resources, Juno selected SystemEDGE because of its unique ability to autonomously monitor critical processes, log files and pre-defined thresholds. SystemEDGE operates 24x7 to provide real-time alarm notification of potential system or hardware issues. Now, with hundreds of actively used licenses for its systems, Juno continues to expand its use of SystemEDGE.

"We have been using SystemEDGE for more than two years, and it has performed extremely well for us. It has been quite reliable in monitoring our critical systems--whenever it detects a potential problem, such as system overload, it warns us in advance so that we can remedy the situation before our subscribers might be affected," said Davin Milun, Juno director of server operations. "We also enjoy a close working relationship with Concord. In fact, we've been very pleased to see features we've requested incorporated into subsequent releases of SystemEDGE."

SystemEDGE is part of Concord's eHealth solution suite for end-to-end performance and availability management across the entire e-business infrastructure. eHealth is the only integrated solution combining real-time management with historical context across systems, applications, and networks. SystemEDGE manages multi-vendor IT environments by providing IT support staffs with vital information needed to manage thousands of systems from a single site.

"Internet access is quickly becoming a mainstream necessity, creating a highly competitive environment for Internet service providers. Customers are won and lost daily, based on the level of access and quality of service they receive," said Dan Phillips, executive vice president and COO, Concord. "We are proud that SystemEDGE has for the past two years enabled Juno to ensure uptime, peak performance and quality service to its millions of customers."

Service providers such as Juno currently account for more than 30 percent of Concord's total customer base.

About Concord Communications

Concord Communications, Inc. (Nasdaq: CCRD) is the market leader in solutions that maximize the performance and availability of the e-business infrastructure. With its eHealth solution set, Concord offers the only solution to combine real time information with historical context for integrated management across systems, applications and networks. Only by successfully managing performance and availability across all of these key areas can organizations truly ensure effective e-business. This end-to-end view provides the critical insights needed to power day-to-day business and e-commerce operations for some of today's most successful service providers and corporations worldwide. Concord is headquartered in Marlboro, Massachusetts. For more information on Concord, call 1 [phone] or visit Concord's World Wide Web site at www.concord.com.

The Total View, eHealth and Live Health are trademarks of Concord Communications. Concord, the Concord logo and Network Health are registered trademarks of Concord Communications, Inc.