Automating user creation in Active Directory - possible?

Hello, hopefully this is the correct spot for this type of question.
I am looking to take advantage of the API and hopefully get the process of essentially "HR checking the approved box" for a hired applicant and a script (powershell) listens for this event, then connects in to the system to gather the new employee information and create the user account in our AD. I want to automate this so its out of the hands of our single tech creating a new account every time for each new hire. I'm in healthcare, so at times people fluctuate monthly. Any tips or links would be very appreciative. Thanks!