Amazon Redshift announces preview of cross-account data sharing

Amazon Redshift data sharing allows you to share live, transactionally consistent data across different Redshift clusters without the complexity and delays associated with data copies and data movement. Ability to share data across clusters that are in the same AWS account is already generally available. Now you can preview cross-account data sharing to share data across Redshift clusters in different AWS accounts, both within and outside your organization. Cross-account data sharing is available on all Redshift RA3 node types. There is no additional cost to use cross-account sharing on your Amazon Redshift clusters. 

Source:: Amazon AWS