What is best way to zip large amount of objects from aws s3 (like Tbs of files)

The best way to copy large numbers of objects to other buckets seems to be S3 Batch Operations. [1] [2]

[1] Performing large-scale batch operations on Amazon S3 objects - Amazon Simple Storage Service
https://docs.aws.amazon.com/AmazonS3/latest/userguide/batch-ops.html

[2] Copy objects - Amazon Simple Storage Service
https://docs.aws.amazon.com/AmazonS3/latest/userguide/batch-ops-copy-object.html

However, a different approach seems to be needed for how to zip existing objects. [3] [4]

[3] python - possible to copy s3 file and change its zip format while doing so?
https://stackoverflow.com/questions/67355516/possible-to-copy-s3-file-and-change-its-zip-format-while-doing-so

[4] amazon web services - Zip up folders as I upload them to AWS Glacier - Stack Overflow
https://stackoverflow.com/questions/57108755/zip-up-folders-as-i-upload-them-to-aws-glacier

Hope one of the above fits your requirements.