GSTN is a non-profit company established to manage the IT infrastructure and services for GST implementation in India. It is owned jointly by the central and state governments as well as private institutions. The document discusses GSTN's structure, governance, funding, and role in developing the GST IT system. Key issues like strategic government control, expenses, and audit are also covered. Implementation of GST and its associated IT system created initial problems, but GSTN has been working to address issues and build taxpayer capabilities.