The Sync Framework is Microsoft's innovation to address the dilemma of occasionally connected systems. It is a comprehensive synchronization platform that enables collaboration and offline access for applications, services, and devices. In particular, it features technologies and tools that enable device roaming, sharing, and the ability to take networked data offline before synchronizing it back to the networked application at a later time.
Pro Sync Framework concludes with a working example that shows how the techniques you've learned can be used to create a versatile application, adaptable to a wide variety of connectivity and synchronization challenges.