Project Rome, conceived as part of the cross-platform initiative from Microsoft, was initially built in-line with the app service infrastructure introduced with Universal Windows Platform. Rome infrastructure not only delivers a set of cloud services to unify the experience across devices and operating systems, but also provides an uniform development platform across these runtimes. Additionally, using the Graph API integration, developers can create and drive deeper engagement across boundaries and build collaborative experiences with multiple users. This presentation demonstrates key use-cases for Project Rome using Microsoft Graph and Xamarin.