DALLAS--(BUSINESS WIRE)--Columbia Advisory Group (CAG), a well-respected Information Technology (IT) consulting firm, has expanded to better support client needs with employees in Houston, Texas and Atlanta, Georgia. The employees are collocated with clients for on-site support and consulting. “The geographical expansion, along with new hires in those locations, has enabled Columbia Advisory Group to grow our resources and offer additional services and support, which better meet the needs of ou