Grants used to share data from S3 buckets with external parties. ChatGPT also provided the helpful info:

• Purpose: S3 Access Grants are a feature introduced to enhance sharing capabilities in S3. They allow you to share objects with other AWS accounts or through the internet while maintaining a high level of control and auditability.
• Functionality: With Access Grants, you can grant time-limited access to specific objects within your S3 buckets. It's a more granular and controlled way of sharing compared to traditional bucket policies or object ACLs.
• Use Cases: Ideal for scenarios where you need to share data with external parties or different AWS accounts without changing bucket or object permissions. It's particularly useful for temporary access, like sharing large datasets for a limited time.****