Constellation Software Inc., together with its subsidiaries, acquires, builds, and manages vertical market software businesses to develop mission-critical software solutions for public and private sector markets. It is involved in the software licensing; and sale of hardware activities. The company also offers professional services consist of implementation services, custom programming, product training, managed services, and consulting services; maintenance and customer support services, and hosted software-as-a-service products; and other recurring services. It operates in Canada, the United States, the United Kingdom, Europe, and internationally. Constellation Software Inc. was incorporated in 1995 and is headquartered in Toronto, Canada.