Treasury Information System Architecture Framework

The Treasury Information System Architecture Framework (TISAF) is an early 1990s Enterprise Architecture framework to assist US Treasury Bureaus to develop their Enterprise Information System Architectures (EISAs).

The TISAF was developed by the US Department of the Treasury in 1997, and let to the development of the Treasury Enterprise Architecture Framework (TEAF), released in 2000. The TEAF represents the second-generation framework for the Treasury. TISAF was the first-generation framework.

Overview

The Treasury Information System Architecture Framework (TISAF) consists of a list of goals and objectives for planning the Treasury's information technology, a set of architectural principles for developing information systems, an EISA model for describing distinct views of enterprise information systems, and a set of standards for guiding specific product selection.

The EISA model provides four architectural views to organize, plan, and build enterprise information systems, consisting of the Information, Functional, and Work architectures and the Infrastructure.

History

TISAF incorporated elements from the C4ISR Architecture Framework, which was developed by the Mitre Corporation from 1994 on. In January 1997, the Treasury issued TISAF Version 1, consisting of three volumes:

the Treasury Information Systems Architecture Framework,

Treasury Architecture Development Guidance, and

the Treasury Architecture Development Process.

In July 1997, the Treasury issued additional guidance to complement TISAF. This guidance, which was finalized in September 1997, provides "how to" processes for developing an information systems architecture in accordance with TISAF. In 1989 US congress granted $200,000 for the department-wide implementation of the Treasury Information System Architecture Framework.

Further developments in the US Department of the Treasury let to the development of the Treasury Enterprise Architecture Framework, first published in July 2000.