Provisioning (when applied to users, or objects in a directory) is only really known to those who have to administer those objects. Before IDAM solutions, or more specifically before SAP and Novell got into the game, everyone just knew it as managing users. It makes it sound like you’re installing kit.
It’s much nicer and less impersonal to say “I created an account for xxx”, “We added xxx to this group” “Please grant mrs XXX access to this application” rather than “I provisioned Mr xxx with xyz” or “mr y has been terminated, apply rapid deprovisioning to their account”