Amazon S3 Batch Operations adds support for S3 Object Lock
You can now perform S3 Object Lock operations using Amazon S3 Batch Operations to apply or change legal holds or retention periods across many objects with a single API request or a few clicks in the S3 Management Console. S3 Batch Operations lets you perform repetitive or bulk actions like copying or updating tag sets across billions of objects. S3 Batch Operations handles all the manual work, including managing retries and displaying progress.
Source:: Amazon AWS