Assembly: Microsoft.Synchronization.SimpleProviders (in microsoft.synchronization.simpleproviders.dll)
The simple provider API is designed primarily for two types of replicas:
Replicas that do not support any kind of change tracking. This type of replica uses a full enumeration provider (FullEnumerationSimpleSyncProvider), which enumerates all items from the source replica every time synchronization occurs.
Replicas that support anchor-based change tracking. This type of replica uses an anchor-based provider (AnchorEnumerationSimpleSyncProvider), which enumerates the items from the source replica that changed after a specific anchor was set, which is typically a point in time.
For more information about simple providers, see How to: Create a Managed Simple Provider. For more information about custom providers in general, see Custom Provider Fundamentals, especially the section "Deciding Between a Simple Provider and a Standard Provider".