Framework I/O Target Object
UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2.
For more info, see Getting Started with UMDF.
The framework I/O target object is exposed to drivers by the IWDFIoTarget interface. It retrieves information about an I/O target, which typically represents a lower driver in the stack but can also represent another UMDF driver or the kernel-mode portion of the stack. The I/O target object provides UMDF drivers a way to send requests to another device.
UMDF drivers can also use the IWDFIoTargetStateManagement interface to manage and monitor the state of an I/O target object.