Perfect Forwarding is a programming technique used in C++ that allows functions to forward their arguments to other functions while preserving the original value categories of those arguments. This means that if an argument is an lvalue (a variable that has a memory address), it remains an lvalue when passed on, and the same applies to rvalues (temporary objects). This technique is particularly useful in template programming, where the types of arguments may not be known in advance. By using std::forward, developers can ensure that the correct type of reference is maintained, leading to more efficient and safer code.