Does anyone use (or have used) the directory services from Amazon Web Services? Just wondering how well it works. I work IT for a school district of over 4000 kids & staff. We already use AWS for some services (printing, web site, help desk, etc.), but we still use master/replica OD at each of our half a dozen buildings. I'd like to know how easy it is to add/remove/change users, how well & easy it is to connect to other services (like Google apps), etc.?