The HPE-UX SNAplus2 API (Application Programming Interface) provides a wide variety of APIs to enable application communications. HPE-UX SNAplus2 API includes Logical Unit (LU) Type 6.2, Common Programming Interface for Communications (CPI-C), LUA, Common Service Verbs (CSV), Node Operator Facility (NOF), and Management Services (MS) APIs.Combined with the HPE-UX SNAplus2 Link product, HPE-UX SNAplus2 API gives HPE customers the ability to develop applications that are distributed between an HPE 9000 computer and an IBM host or peer system. For systems network architecture (SNA) PC client customers, HPE-UX SNAplus2 Link supports connectivity to third-party API emulation running on PCs; this connectivity is limited to APPC and CPI-C. The HPE-UX SNA plus2 API product can be run in either a standalone or client/server environment. The stand-alone environment allows access to IBM systems from a single HPE-UX computer that has its own HPE-UX SNAplus2 Link. The client/server environment permits access to the IBM systems from multiple HPE-UX systems on an Ethernet, Token Ring, or FDDI LAN. Client systems generally use a single HPE 9000 system with SNAplus2 Link as a server to access the IBM systems.