Delete Simple Storage Service

S3 deletion cannot be performed if there are objects in S3.
If all objects have been deleted, they can be deleted by following the steps in the following document.
https://docs.aws.amazon.com/AmazonS3/latest/userguide/delete-bucket.html

If versioning is enabled, it is also a good idea to check for old versions remaining in the object.

Amazon Simple Storage Service (S3) isn't a service that you can "delete" in the way that you might delete a file or an object. It's a web service offered by Amazon Web Services (AWS) that provides storage through web services interfaces. When you talk about "deleting" S3, what you're likely referring to is deleting all the S3 resources that you've created, so you aren't charged for them.

Delete all S3 objects: Go to the S3 console, navigate to each bucket, and delete all objects within the bucket. You can do this by selecting the bucket, selecting the objects inside, and choosing "Delete". Please note that this action is irreversible and you will lose all data stored in these objects.

Delete all S3 buckets: After deleting all objects, you can delete the buckets themselves. From the S3 console, select the bucket and choose "Delete". You will be asked to confirm the deletion. Again, this action is irreversible, and you will lose all configuration associated with the bucket.

Remove any associated resources: If you're using any other resources associated with S3, such as S3 events in AWS Lambda, you should ensure these are removed as well. If you have lifecycle policies, replication rules, or any other bucket configuration, make sure to delete them.

Check for Transfer Acceleration: If you have enabled S3 Transfer Acceleration on any bucket, you need to disable it to avoid charges.

Check for S3 versions: If you've enabled versioning on your S3 buckets, you might have multiple versions of an object, all of which will be charged for storage. Make sure to delete all versions of an object.

Check for Cross-Region Replication: If you've set up Cross-Region Replication (CRR), you may have replica copies of your objects in another AWS region. Check your replication settings and ensure that you delete any replicated objects and buckets in other regions.