CTG is a technical group that specializes in assisting universities migrate from SunGard's Advance Windows to Advance Web Access (AWA). They present options for customizing and extending AWA functionality. Their tool, C-Ast, provides version control and simplified transfer of changes between development, test, and production environments for AWA customizations without modifying SunGard code. It introduces a model and triggers to integrate with the configuration utility and AWA tables.