Open banking gives you the ability to share your banking data with third parties that have been accredited by the ACCC. This will allow you to get better-suited banking products and switch products or banks more easily.
As a bank customer, you will be able to ask that your data be sent to accredited businesses which may be other authorised banks, financial institutions and organisations. You have control over how your data is used, and to whom it is given. The data is protected by the Rules of the ACCC.
More info go to https://www.ausbanking.org.au/priorities/open-banking/