Large organizations where the number of users accessing crucial data is pretty high have to face a lot of challenges in managing fine-grained access.
A variety of AWS services like IAM, Lake Formation, and S3 ACL can help in fine-grained access control. But there are scenarios where a single entity containing the global data needs to be accessed by multiple user groups across the system with restrictive access. Also, organizations with a global presence might be working in different environments and with different toolsets, so data movement and cataloging become very tedious.