Constellation Software Inc., together with its subsidiaries, engages in the development, installation, and customization of software in the United States, Canada, the United Kingdom, Europe, and internationally. It operates through two segments, Public Sector and Private Sector. The Public Sector segment develops and distributes software solutions primarily to government and government-related customers. The Private Sector segment develops and distributes software solutions, principally to commercial customers. The company also provides related professional and support services, including installation, implementation, training, and customization of software. Constellation Software Inc. was founded in 1995 and is headquartered in Toronto, Canada.