Advanced Program to Program Communication

Advanced Program to Program Communication (APPC) is a key aspect of IBM’s Systems Network Architecture (SNA) that enables direct LAN communication between two or more PCs at the program level. This extended form of program-to-program connection plays a decisive role in the networking of computers and the optimization of communication processes.

In the SNA architecture, APPC enables seamless interaction between different computers in a network. This happens on a higher level than with conventional communication protocols, as APPC is specifically designed to allow programs to communicate directly with each other. This direct program-to-program communication offers greater efficiency and flexibility in data transfer.

The advantages of APPC extend across various application areas, from file transfer to complex business processes. By using LANs, data is exchanged quickly and securely between the connected PCs. This helps to minimize bottlenecks and optimize network performance.