PXI Platform Services is a software framework that supports NI PXI chassis and controllers by implementing PXI software specifications and providing system services essential for the operation of NI products. It is necessary for identifying NI PXI and PXI Express chassis and modules, facilitating trigger routing, and while it is included with NI instrument drivers, it can also be required independently for specific applications, such as using NI MXI products or PXI chassis without other NI PXI hardware drivers.