How-To Create Extension Snap-ins
Applies To: Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server Technical Preview, Windows Vista
MMC supports the ability to manage multiple applications from one location. One way to do this is to tightly integrate two management applications. The tight integration is done at development time. An administrator can still choose to enable or disable the tight integration by deciding which integrated components to enable.
The tight integration functionality is provided in the form of extensions. Snap-ins that extend other snap-ins are called extension snap-ins. Snap-ins that do not extend other snap-ins are called stand-alone or primary snap-ins.
Namespace Extensions
A snap-in can add new scope nodes and share data with a node in a primary snap-in or in other namespace extension. For more details on namespace extensions, see Namespace Extensions.Property Sheet Extensions
A snap-in can add new property pages to a property sheet of a scope or a result node that belongs to a primary snap-in or to a namespace extension. For more details on property sheet extensions, see Property Sheet Extensions.