"Data sovereignty came out as a critical issue and that fact Amazon now has datacentres in Australia was a important for the banks," he said.
"Amazon is very well regarded by the companies who believe that data sovereignty is important," he said.
AWS senior Manager, technology solutions, Glen Gore, said the partnership was a great first step towards unlocking legacy data for the purposes of analytics and easy access.
"They want to get some of the benefits of the Cloud but at the same time make sure its extremely safe and highly durable," he said.
"It's very much an enabling function.
He said customers were using S3 activity logs which were highly durable.
"It's a layered service which makes it very secure and meets the requirements of the bank," he said.
"We are excited to see the partnership between CA, Riverbed and Amazon helping customers in their transitions."
Riverbed managing director, Ian Raper, said his company provided availability through either a virtual addition or a shrink wrapped appliance.
"It takes it through a process that de-duplicates data caches it and sends it into the Amazon Cloud," he said.
"Our job is to make sure this technology works seamlessly, makes limited changes and makes the data highly available."
Large system partners for the mainframe cloud storage solution includes Dimension Data, Telstra, Optus, IBM and HP.
Raper said customers were very surprised with the level of performance and security the product offered.
"We are put through our paces to make sure they are comfortable with the level of security," he said.
"They are very happy with what they are getting because its more than what they had before.
He said it enabled customers to leverage hybrid Cloud storage.
"They can get a tiered storage model using this and they were very surprised about the performance they got. It's faster than they expected.
Raper said Riverbed products were only available through channel partners.
"FSI (financial services industry) is the biggest opportunity for us they have a very strong interest in this technology," he said.
"We believe we need to certify our technologies. None of us can do everything in this scenario."
Sign up for Computerworld eNewsletters.