Featuring IBM and Amdahl mainframes, disk and network processors, alongside StorageTek tape devices, CSG was the largest, followed by Datacrown, whose owner at the time was Crown Life Insurance, and IP Sharp (eventually acquired by Reuters, now Thomson Media).
CSG's head office and main datacentre was located in the Sheridan Park Research Community in Mississauga Ontario.
The Mississauga datacentre was one of the largest in North America, consisting of two raised floorspaces of 30,000 square feet (2,800 m2) each.
To achieve the required efficiencies, CSG developed its own Pre-Scan software for the IBM MVS Operating System.
The net result was significantly faster and more efficient throughput by eliminating / minimizing wait times.