**To update a stack set**
The following ``update-stack-set`` example adds a tag with the key name ``Owner`` and a value of ``IT`` to the stack instances in the specified stack set. ::
aws cloudformation update-stack-set \
--stack-set-name my-stack-set \
--use-previous-template \
--tags Key=Owner,Value=IT
Output::
{
"OperationId": "e2b60321-6cab-xmpl-bde7-530c6f47950e"
}