(Independent Computing Architecture) An input/output presentation protocol from Citrix that governs the keyboard, mouse and screen formatting between clients and servers in Citrix's products. Originally "Intelligent Console Architecture."The First Windows Thin Client ComputingUsing Citrix's WinFrame on Windows NT in the mid-1990s, ICA was the first protocol to provide thin client computing for Windows. Soon after, Microsoft came out with its Terminal Services, based largely on Citrix software, but using the RDP protocol. ICA supports numerous client platforms, including Windows, DOS, Mac, Unix, Linux and Java. See thin client, WinFrame, Citrix XenApp and Citrix XenDesktop.
Innovative Communications Alliance - alliance formed by Microsoft and Nortel for Unified communications.
Irish Citizens Army.
Origin of ica
Note that etymologically this is not -ic + -a (“(plural ending)”), as -ic is the English form, having dropped the -um, though adding an -a to an English word ending in -ic does produce a superficially etymologically correct Latinate form.