The main reasons for not moving to Cloud are security, existing infrastructure investments and legacy integration.

"We need to be able to model usage over time based on the business function and strategy. That will prevent you from being exposed down the track, but it's early days for corporations to do that," Ventura said.

"Regarding security, where will the data reside? Will it be copied? Has the customer be given consent? And is the cloud considered inside or outside the trusted zone?"

BT Financial Group CIO, Tony Forward, is looking at a new for the company.