Fourth quarter cloud subscription revenue increased 26% year-over-year to $83.1 millionFull year cloud subscription revenue increased 29% year-over year to $304.5 million MCLEAN, Va., Feb. 15, 2024 (GLOBE NEWSWIRE) -- Appian (NASDAQ:APPN) today announced financial results for the fourth quarter and full year ended December 31, 2023. "Appian delivered our plan in 2023 and reached two milestones. Full year revenue exceeded half a billion dollars, and we achieved the highest quarterly gross margin in our publi ...