Appen Limited, together with its subsidiaries, operates as an AI lifecycle company that collects and labels image, text, speech, audio, video, and other data used to build and enhance artificial intelligence systems. It operates through two segments, Global Services and New Markets. The company offers data sourcing services, including image, video, speech, and text data collection services pre-labeled datasets of audio, image, video, and text; and language-based AI solutions. It also provides data preparation services comprising machine learning assisted data annotation tools, which include image annotation, video annotation, text, sensor, audio annotation, and other solutions; enterprise-ready data annotation platform, which offers smart labeling, workflows, in-platform audit, and enterprise analytics; and knowledge graph and ontology support services. The company was formerly known as Appen Holdings Pty Limited and changed its name to Appen Limited in October 2014. Appen Limited was founded in 1996 and is headquartered in Chatswood, Australia.