Which solution will meet these requirements with the LEAST operational overhead?
Create dedicated S3 access points and access point policies for each application.
Create an S3 Batch Operations job to set the ACL permissions for each object in the S3 bucket.
Replicate the objects in the S3 bucket to new S3 buckets for each application. Create replication rules by prefix.
Replicate the objects in the S3 bucket to new S3 buckets for each application. Create dedicated S3 access points for each application.
Explanations:
Creating dedicated S3 access points allows for fine-grained access control for each application, with policies that can restrict access to specific prefixes. This approach minimizes operational overhead as it leverages existing S3 capabilities without needing to manage multiple buckets or complex ACLs.
Using S3 Batch Operations to set ACL permissions for each object introduces unnecessary complexity and operational overhead, as it requires processing each object individually and does not inherently restrict access to prefixes, making it less efficient for the stated requirements.
Replicating objects to new S3 buckets for each application increases operational overhead due to the need to manage multiple buckets, replication rules, and synchronization of data. Additionally, it complicates data management and does not provide the granular control at the prefix level needed for access restriction.
While creating dedicated S3 access points for each application is a good practice, replicating objects to new S3 buckets adds unnecessary complexity and operational overhead. The solution does not align with the goal of maintaining a single data lake while enforcing access controls efficiently.
I organize that the answer is:
Create dedicated S3 access points and access point policies for each application.