"This investment provides scope to grow [and] adopt new best practices and deploy internal and external processing resources in an open and contestable manner," Harte said. "Our systems infrastructure is highly distributed and we need to leverage opportunities in virtualization to develop world-class hosting and data services."

EDS Australia and New Zealand managing director Chris Mitchell was upbeat about the new contract, saying the extension was a "vote of confidence" in the existing relationship and the service EDS has delivered since 1997.

"We are embarking on a new, more collaborative future together," Mitchell said. "This agreement will underpin all future service provisions and any expansion of services between EDS and the bank."