Replace and remove S3 object tags

Part 35 of AWS from Zero. This lesson keeps the scope to one S3 behavior you can verify from the terminal.

What we are learning

S3 object tagging uses replacement semantics. A safe update starts by reading the current set and ends by verifying the complete replacement.

Before you run it

aws sts get-caller-identity
REGION="ap-south-1"
BUCKET="replace-with-your-private-demo-bucket"

Use a private general purpose bucket that you own. Replace every placeholder before running a write or delete command.

The command

aws s3api put-object-tagging \
  --bucket "$BUCKET" \
  --key tagged.txt \
  --tagging 'TagSet=[{Key=Environment,Value=prod},{Key=Retention,Value=30-days}]'

A successful configuration command may return no output. Treat inspection as a separate required step.

Inspect the result

aws s3api get-object-tagging \
  --bucket "$BUCKET" \
  --key tagged.txt \
  --output json

Read the returned fields rather than assuming the write succeeded exactly as intended.

One tiny variation

aws s3api delete-object-tagging \
  --bucket "$BUCKET" \
  --key tagged.txt

delete-object-tagging removes the tag set without deleting the object.

Common mistake

Do not assume tags change object metadata or content. They are a distinct subresource with distinct IAM actions such as s3:PutObjectTagging.

Cleanup

aws s3api get-object-tagging --bucket "$BUCKET" --key tagged.txt

Confirm that TagSet is empty. Keep or remove the object according to the lesson where you created it.

Next, we will learn Replace S3 metadata while copying an object.

Official AWS CLI reference