STI's client base includes Fortune 500 companies and industries such as retail, financial services, utilities, manufacturing, engineering, and software firms.

• ABN AMRO
• ADP
• Advised Solutions
• AMR Gold Resources
• Compsat Security
• Compsat Technology
• Delphi
• Dayton Hudson Corporation
• Detroit Edison
• DyAG (Dynamic Automation Group)
• Exhibit Enterprises
• GAI (Global Auto Industry)
• General Motors
• Guardian Industries
• Hardnox Security
• Kmart Corporation
• Lockheed Martin
• Michigan National Bank
• Michigan Consolidated Gas Company
• MichTel
• Oakwood Hospital
• OnLine Synergy
• Plante & Moran
• RWD Technologies
• Quicken Loans
• Staffing Services
• Summit Training Source
• TESCO Group Companies
• Textron Automotive
• TRW
• Ultimate Burn Machine
• Unisys Corporation