A major stumbling block in the quest for complete end-to-end transaction performance for enterprise Web sites has been that external testing services don't work behind the firewall and that internal monitoring and analysis tools can't reveal what's happening out on the Internet.

But Keynote Systems Inc. plans to change all that when it launches a service next week that gives enterprises an integrated look at both sides of the firewall.

The Keynote Application Perspective service, which will debut along with a high-level Performance Scoreboard reporting portal and Performance Tune consulting service, marries its synthetic transactions that mimic the end-user experience with the diagnostics and analysis capabilities in Hewlett-Packard Co.'s OpenView Transaction Analyzer.

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