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Hi all,
What is the detail difference `--replace` parameter and `--target` parameter in `pulumi preview` or `pulumi up` command?

Target only runs the necessary operations on the target. Let's say you have an s3 bucket that has had a code change, and you only want to update the s3 bucket, you'd use Target.

Replace will mark a resource for recreation, so delete + recreate

Then if I want to recreate only one of my resources, do I use `--target` parameter not `--replace` parameter? (if the code changed)

If it's already marked for recreation because of code changes, then yes.

Otherwise, use Replace

Finally, I understand two parameter's mechanism.
Thank you Anthony