The S3 Consistency model applies, with no object locks between writes. See more details here: https://docs.aws.amazon.com/AmazonS3/latest/dev/Introduction.html#ConsistencyModel.
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S3 CRR and objects locksAccepted Answerasked 2 years ago
S3 Object Lock and CRR
Does AWS S3 CRR/SRR replication order match the order of object creation?