!!! Overview
[{$pagename}] ([LPC], often also referred to as Lightweight Procedure Call or Local [Inter-Process Communication]) is an internal, __undocumented__ inter-process communication facility provided by the [Microsoft] Windows NT kernel for lightweight [IPC] between processes on the same computer. 

 [{$pagename}] as of [Windows Vista], has been rewritten as [Advanced Local Procedure Call] ([ALPC]) in order to provide a high-speed scalable communication mechanism required to efficiently implement User-Mode Driver Framework (UMDF), whose user-mode parts require an efficient communication channel with UMDF's components in the executive.[1]

!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [Local_Procedure_Call|Wikipedia:Local_Procedure_Call|target='_blank'] - based on information obtained 2017-08-17-