How to secure WCF service with WAAD

I have a WCF service hosted in a Woker role. On premise i have secured the endpoint with windows Authentication. In Azure i want to secure it with WAAD (as i can sync on-premise AD with WAAD). How can I do it? Do I need to use ACS in there? How would binding look like in my configuration file?

Thanks,

Sanjay A.