There's an adage that says change is the only constant. Still, every IT executive knows constant change wreaks havoc on a complex IT environment. In fact, IDC and Gartner report that 70% to 80% of IT-related problems are directly attributable to changes made to the environment.

Mark Etherington, global head of distributed computing at JPMorgan Chase, New York, sees it firsthand. His firm makes thousands of changes to its 30,000-server environment each month. Like many financial firms, JPMorgan sometimes imposes change freezes at the end of the month or quarter to ensure optimal systems availability.

"When we have a change freeze, we see a reasonably dramatic drop-off of issues in the environment," Etherington says. "So we're faced with a conundrum. Do we prevent change to increase availability, or do we work out how to manage large numbers of changes better? The way to attack this problem is to make change a safer practice."

The problem is compounded as firms move to New Data Center technologies, such as virtualization. "As you build a more complex infrastructure to support things like server virtualization, you may think it's OK to be sloppy, since virtualization guarantees the service availability to some degree," says Richard Potocki, department manager of IT operations at Erie Insurance, in Erie, Pa. No one would notice if 25 out of thousands of servers fail because virtualization would cover for them. "But . . . an environment that allows me to be that sloppy has to be very complex. To manage that complexity, to make sure it works properly, you need to have really good change management," says Potocki, who has automated change management across his 285 servers.

Good change management relies on automation, specifically automating the change-management process while following the best practices laid out within the ITIL, users say. Strict IT business processes implemented via automation can increase the success rate of change, thereby reducing the number of changes necessary, eventually resulting in increased service levels across the board.

But getting to that point isn't easy. Many tools provide some automation but not of the entire change-management process. Ultimately, end-to-end change-management capabilities should come from larger firms, such as BMC Software, CA, HP, IBM and Symantec. Each of these companies, for example,is integrating the appropriate technology, often gained through acquisition, into their product lines.