Continued investment in technology infrastructure by the Commonwealth Bank should ensure that none of its core systems experience more than five minutes of downtime in any given year, according to Michael Harte, CBA's group executive enterprise systems and CIO.Harte acknowledged that vulnerabilities remained. For example, in April CBA customers were unable to access CBA systems because a networking component in one of its data centres had failed which denied them access to CBA's banking platforms.Harte acknowledged that such outages are "highly inconvenient, I don't think they are ever devastating." He said that the investment in technology by the bank had improved the reliability and responsiveness of its banking infrastructure, and that real time processing capability continued to deliver more value to customers.This also provided greater insights for the bank, so that it could "develop analytical capabilities closer to real time so that we can have more involvement in (customers') spending moment, in the investment moment."