After all, one of the selling points of SaaS is that customers are kept up to date with no effort on their part, and the companies behind those products have more predictable revenues and do not have the responsibility of maintaining old versions.
CA's policy is to continue to maintain each version of its software indefinitely. While no development work is done on old versions, changes are made if needed to accommodate new versions of the operating system, for example.
SaaS "is such a better solution" compared with perpetual licensing, Mr Gregoire said.
Getting customers onto current versions is "one of the biggest problems in all of tech," he said. "I feel an obligation to go tackle that problem."
ANZ chief technology officer Carl Terrantroy said the use of old and heavily customised software was "a huge issue" in Australia as the attitude tends to be "if it's not a problem, don't touch it."
Making changes would not be a simple process, and CA will need to find ways to mitigate the risks faced by those customers.