Micromuse's Netcool Suite Empowers SevenSpace With End-to-End Service Management Solution.

Business Editors/High-Tech Writers

SAN FRANCISCO--(BUSINESS WIRE)--Sept. 20, 2000

Managed Services Provider to Utilize

NETCOOL(R) Applications for Proactive Management and

Realtime Monitoring of Internet Applications

Micromuse Inc. (Nasdaq: MUSE), the leading provider of fault and service-level management software, today announced that SevenSpace has selected the Netcool suite of applications to provide realtime monitoring of its customers' end-to-end systems and applications. SevenSpace operates enterprise class, Internet-based applications for Global 2000 companies.

"We knew early in our business development process that we had to select the best central management capability for our entire service delivery infrastructure," said Peter J. Weber, President of SevenSpace. "We had stringent technical requirements for a comprehensive management platform supporting standard operating practices and procedures that maintain service reliability and scalability. The rapidly deployable Netcool Probe technology quickly adapted to our environment, providing a highly effective realtime fault monitoring solution for our customers' Internet applications."

SevenSpace selected Netcool/OMNIbus(TM), Micromuse's flagship application, as a core component of its Enterprise Management System which allows SevenSpace to monitor its customers' Internet applications. In addition, it allows for realtime, end-to-end monitoring and management of SevenSpace's network infrastructure -- including servers, switches and routers, load-balancing equipment, and firewalls -- as well as internal applications. SevenSpace integrates Netcool applications with the Remedy trouble-ticketing system via Netcool Gateways to ensure that tickets are automatically populated with crucial customer information from the management infrastructure. This enables the company to streamline its overall operational efficiency for maintaining 24x7 service assurance and to meet predetermined customer service-level agreements (SLAs).

"The marketplace for Web and applications hosting is evolving toward a more managed services paradigm and SevenSpace has established itself in a leadership role, thanks to its commitment to progressive technology solutions," said Greg Brown, Micromuse's Chairman & CEO. "As SevenSpace operates its customers' IT systems over a distributed infrastructure, the Netcool suite will enable their operations staff to monitor realtime events, as well as correlate information from a broad range of sources, to maximize application uptime and protect critical revenue-generating e-business offerings."

SevenSpace selected Micromuse's suite of 18 Netcool/Internet Service Monitors(TM) (Netcool/ISMs(TM)) to proactively measure compliance with SLAs in terms of Web hosting service availability monitored by HTTP, SHTTP, FTP and e-mail Monitors. Netcool/ISMs will allow technical specialists in SevenSpace's global operations center, located in Reston, Va., to view the status and ascertain the availability of Internet applications and e-systems in realtime. In addition, Netcool/ Reporter(TM) will provide operations managers with key historical availability statistics to be used for service planning and trending. Network-wide events will be collected from Netcool Syslog and SNMP trap D Probes and security events will be gathered from firewalls with the Netcool/Firewall(TM) Probe.

About the Netcool Suite

Micromuse's Netcool software suite collects management data from more than 200 management environments and network devices, including voice, data and Internet. Fault data is rapidly processed and filtered by the Netcool ObjectServer(TM), an in-memory database. The Netcool application allows operators to build views of service availability in realtime, helping them manage networks more efficiently. Because it is scalable and deploys rapidly, the Netcool business model allows service providers to expand their networks as their markets grow.

About SevenSpace

SevenSpace is a technology and services company that manages Internet-based, enterprise class applications for Global 2000 customers. Headquartered in Reston, VA, the company monitors and manages customers' applications and e-systems 7X24X365 from their global operations center in Reston, VA. The company will also serve the European and Asia Pacific markets within the next nine months. The Web site is www.sevenspace.com.

About Micromuse

Micromuse Inc. (Nasdaq: MUSE) is the leading provider of fault and service-level management software. Micromuse was named one of the Top 25 Best Performers in the Wall Street Journal's Shareholder Scoreboard, and has recently been recognized in the Forbes 500, Business Week's Info Tech 100, Bloomberg's Top 100 Stocks, Barron's 500, and the San Francisco Chronicle 500. Micromuse customers include AirTouch, AT&T, BT, Cable & Wireless, Cellular One, Charles Schwab, Deutsche Telekom, Digex, EarthLink, GTE, ICG Communications, ITC^DeltaCom, MCI Worldcom, NextLink, PSINet and a number of financial investment concerns. Headquarters are located at 139 Townsend Street, San Francisco, Calif. 94107; [phone]. The Web site is at www.micromuse.com.

Netcool is a registered trademark of Micromuse. All other trademarks and registered trademarks in this document are the properties of their respective owners. Any statements contained in this press release that do not describe historical facts may constitute forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Any forward-looking statements contained herein are based on current expectations, but are subject to a number of risks and uncertainties.

The factors that could cause actual future results to differ materially from the forward-looking statements include the following: fluctuations in customer demand, the Company's ability to manage its growth (including the ability to hire sufficient sales and technical personnel), the risks associated with the expansion of the Company's distribution channels, the risk of new product introductions and customer acceptance of new products; the rapid technological change which characterizes the Company's markets, the risks associated with competition, the risks associated with international sales as the Company expands its markets, and the ability of the Company to compete successfully in the future, as well as other risks identified in the Company's Securities and Exchange Commission Filings, including but not limited to those appearing under the caption "Risk Factors" in the Company's most recent Quarterly Reports on Form 10-Q and on Form 10-K on file with the Securities and Exchange Commission and available on the Company's Web site.