Treasury Enterprise Architecture Framework: Difference between revisions

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[[File:TEAF Work Products for EA Direction, Description, and Accomplishment.jpg|thumb|420px|TEAF Work Products for EA Direction, Description, and Accomplishment.<ref name="WH05">[httphttps://georgewbush-whitehouse.archives.gov/omb/egov/documents/CRM.PDF FEA Consolidated Reference Model Document] {{Webarchive|url=https://web.archive.org/web/20100705040628/http://georgewbush-whitehouse.archives.gov/omb/egov/documents/CRM.PDF |date=2010-07-05 }}. whitehouse.gov May 2005.</ref>]]

'''Treasury Enterprise Architecture Framework''' (TEAF) is an [[Enterprise architecture framework]] for [[treasury]], based on the [[Zachman Framework]].

The '''Treasury Enterprise Architecture Framework (TEAF)''' was an [[enterprise architecture]] framework developed by the [[United States Department of the Treasury]] and published in July 2000.<ref name="TEAF00">US Department of the Treasury Chief Information Officer Council (2000). [http://www.eaframeworks.com/TEAF/teaf.doc Treasury Enterprise Architecture Framework] {{Webarchive|url=https://web.archive.org/web/20090318003653/http://www.eaframeworks.com/TEAF/teaf.doc|date=2009-03-18}}. Version 1, July 2000.</ref> Based on the [[Zachman Framework]], it provided a structured approach to organize and align the Treasury’s information systems with its business objectives. In May 2012, TEAF was deprecated and subsumed by the broader [[Federal Enterprise Architecture]] (FEA) policy, as outlined in the "Common Approach to Federal Enterprise Architecture."<ref name="CA FEA">whitehouse.gov (May 12, 2012)[https://obamawhitehouse.archives.gov/sites/default/files/omb/assets/egov_docs/common_approach_to_federal_ea.pdf The Common Approach to Federal Enterprise Architecture]. Accessed January 10, 2013</ref> This shift reflected a federal move toward standardized, interoperable EA frameworks to enhance efficiency and reduce redundancy across agencies, rendering agency-specific frameworks like TEAF obsolete.

[[File:TEAF Work Products for EA Direction, Description, and Accomplishment.jpg|thumb|420px|TEAF Work Products for EA Direction, Description, and Accomplishment.<ref name="WH05">[http://georgewbush-whitehouse.archives.gov/omb/egov/documents/CRM.PDF FEA Consolidated Reference Model Document]. whitehouse.gov May 2005.</ref>]]

It was developed by the [[US Department of the Treasury]] and published in July 2000.<ref name="TEAF00"> US Department of the Treasury Chief Information Officer Council (2000). [http://www.eaframeworks.com/TEAF/teaf.doc Treasury Enterprise Architecture Framework]. Version 1, July 2000.</ref>

== Overview ==

The Treasury Enterprise Architecture Framework (TEAF) was an [[Enterprise architecture framework|architectural framework]] that supportssupported Treasury’sthe Treasury's [[business process]]es in terms of products. This framework guidesguided the development and [[Business process reengineering|redesign]] of the business processes for various bureaus in order to meet the requirements of recent legislation in a rapidly changing technology environment. The TEAF prescribesprescribed [[view model|architectural views]] and delineatesdelineated a set of notional products to portray these views.<ref name="WH05"/>

{{Out of date|section|date=October 2010}}

The Treasury Enterprise Architecture Framework (TEAF) an [[Enterprise architecture framework|architectural framework]] that supports Treasury’s [[business process]]es in terms of products. This framework guides the development and [[Business process reengineering|redesign]] of the business processes for various bureaus in order to meet the requirements of recent legislation in a rapidly changing technology environment. The TEAF prescribes [[view model|architectural views]] and delineates a set of notional products to portray these views.<ref name="WH05"/>

[[Image:Treasury Enterprise Architecture Framework concept.jpg|thumb|280px|TEAF [[view model]].<ref name="WH05"/>]]

The TEAF describes providesprovided:<ref name="WH05"/>

* Guidance to [[Treasurytreasury]] bureaus concerning the development and evolution of information systems architecture,

* A unifying concept, common principles, technologies, and standards for information systems, and

* A template for the development of the [[Enterpriseenterprise Architecturearchitecture]].

The TEAF's functional, information and organizational architecture views collectively modelmodeled the organization’'s processes, procedures, and business operations. By grounding the architecture in the business of the organization, the TEAF definesdefined the core business procedures and enterprise processes. Through its explicit models, a TEAF-based architecture enablesenabled the identification and reasoning of enterprise- and system-level concerns and investment decisions.<ref name="WH05"/>

== History ==

The Treasury Enterprise Architecture Framework (TEAF) is derived from earlier treasury models, such as the US Treasury model ([[TISAF]]) released 1997, and the [[Federal Enterprise Architecture Framework]] (FEAF), released in 1999.<ref>[[Jaap Schekkerman]] (2003). ''How to Survive in the Jungle of Enterprise Architecture Frameworks''. p.113</ref> The first version of the TEAF was released July 2000.

[[Image:Blueprint Roadmap to Treasury IT Modernization.jpg|600px|thumb|center|Blueprint Roadmap to Treasury IT Modernization.<ref>Standards and Configuration Management Team (SCMT) of the Treasury Enterprise Architecture Sub-Council (TEAC) (2007). [http://www.treas.gov/offices/cio/egov/ea/Technical_Standards_Profile.pdf Treasury Technical Standards Profile] {{Webarchive|url=https://web.archive.org/web/20081210202148/http://www.treas.gov/offices/cio/egov/ea/Technical_Standards_Profile.pdf |date=2008-12-10 }}. May 2007</ref>]]

In the new millennium the Treasury Enterprise Architecture Framework (TEAF) has developed into the Treasury Enterprise Architecture (TEA), which aims to establish a roadmap for the modernization and optimization of the U.S. Treasury Department’sDepartment's [[business processes]] and IT environment. The Treasury Enterprise Architecture will provide a framework to guide IT investment planning, streamline systems, and ensure that IT programs align with business requirements and strategic goals.<ref>[http://www.treas.gov/offices/cio/egov/ E-Government] {{Webarchive|url=https://web.archive.org/web/20081210070126/http://www.treas.gov/offices/cio/egov/ |date=2008-12-10 }} U.S. Treasury Department, accessed 09 Dec 2008.</ref>

== TEAF Topicstopics ==

=== Enterprise Architecturearchitecture ===

[[Image:EA Development Environment.jpg|thumb|320px|left|EA Development Environment.<ref name="TEAF00"/>]]

Effective management and strategic decision making, especially for information technology (IT) investments, require an integrated view of the enterprise—understanding the interrelationships among the business organizations, their operational processes, and the information systems that support them. An [[Enterprise Architecture]] formalizes the identification, documentation, and management of these interrelationships, and supports the management and decision processes. The Enterprise Architecture provides substantial support for evolution of an enterprise as it anticipates and responds to the changing needs of its customers and constituents. The Enterprise Architecture is a vital part of the enterprise’senterprise's decision-making process, and will evolve along with the enterprise’senterprise's mission.<ref name="TEAF00"/>

The TEAF has been designed to help both the bureaus and the Departmentdepartment develop and maintain their Enterprise Architectures. The TEAF aims to establish a common Enterprise Architecture structure, consistent practices, and common terminology; and to institutionalize Enterprise Architecture governance across the Departmentdepartment. This architectural consistency will facilitate integration, information sharing, and exploitation of common requirements across Treasury.<ref name="TEAF00"/>

=== Enterprise Architecturearchitecture Frameworkframework ===

[[Image:Framework for EA Direction, Description, and Accomplishment Overview.jpg|thumb|320px|Overview of a Framework for EA Direction, Description, and Accomplishment Overview.<ref name="TEAF00"/>]]

The purpose of the [[Enterpriseenterprise Architecturearchitecture Frameworkframework]] is to provide a structure for producing an [[Enterprise Architecture]] (EA) and managing Enterprise Architecture assets. To reduce the complexity and scope of developing and using an Enterprise Architecture, it must be subdivided so that portions may be used independently or built incrementally in separate projects. The TEAF subdivides an Enterprise Architecture by:<ref name="TEAF00"/>

* Views

* Perspectives

* Work products

The TEAF identifies, as shown in the figure, resources and work products that provide direction for EA development, work products constituting the EA description, and work products documenting how to accomplishment an EA implementation. The resources and work products for EA direction and accomplishment are not part of the EA description itself, but are developed and applied during the overall enterprise life cycle. The TEAF Matri, organizes the subdivisions of the EA description and demonstrates the relationships among them. The following sections describe the subdivisions of the EA and their relationships to the TEAF Matrixmatrix.<ref name="TEAF00"/>

=== TEAF Matrixmatrix of Viewsviews and Perspectivesperspectives ===

[[ImageFile:TEAF Matrix of Views and Perspectives.jpgsvg|thumb|320px304px|TEAF Matrixmatrix of Viewsviews and Perspectivesperspectives.<ref name="TEAF00"/>]]

The TEAF Matrixmatrix is a simplified portrayal of an EA structure to aid in understanding important EA aspects from various vantage points (views and perspectives). The TEAF Matrixmatrix aims to provide a simple, uniform structure to an entire framework. As depicted in the figure, the TEAF Matrixmatrix consists of four architectural views (Functional, Information, Organizational, and Infrastructure), which are shown as columns, and four perspectives (Planner, Owner, Designer, and Builder), which appear as rows. The TEAF Matrixmatrix is a four-by-four matrix with a total of 16 cells. The views and perspectives are described in the following sections.<ref name="TEAF00"/>

When an EA description work product is shown within one cell of the TEAF Matrixmatrix, it means that the main vantage points for developing that work product correspond to that column (view) and row (perspective). However, information from other views (and sometimes other perspectives) is needed to produce a work product. Not all cells must be “filled"filled-in”in" by producing an associated work product. Each bureau must define in its EA Roadmap its plans for producing and using an EA to match its needs.<ref name="TEAF00"/>

=== Enterprise Lifelife Cyclecycle activities ===

[[Image:Enterprise Life Cycle activities.jpg|thumb|320px|left|TEAF Enterpriseenterprise Lifelife Cyclecycle activities

<ref name="TEAF00"/> </ref>]]

An [[Enterpriseenterprise Lifelife Cyclecycle]] integrates the management, business, and engineering life cycle processes that span the enterprise to align its business and IT activities. Enterprise Life Cycle refers generally to an organization’sorganization's approach for managing activities and making decisions during ongoing refreshment of business and technical practices to support its enterprise mission. These activities include investment management, project definition, configuration management, accountability, and guidance for systems development according to a [[System Development Life Cycle]] (SDLC). The Enterprise Life Cycle applies to enterprise-wide planning activities and decision making. By contrast, a System Development Life Cycle generally refers to practices for building individual systems. Determining what systems to build is an enterprise-level decision.<ref name="TEAF00"/>

The figure on the left depicts notional activities of an Enterprise Life Cycle methodology. Within the context of this document, Enterprise Life Cycle does not refer to a specific methodology or a specific bureau’sbureau's approach. Each organization needs to follow a documented Enterprise Life Cycle methodology appropriate to its size, the complexity of its enterprise, and the scope of its needs.<ref name="TEAF00"/>

=== Products ===

[[Image:TEAF Products.jpg|thumb|320px|TEAF Products.<ref name="WH05"/>]]

The TEAF provides a unifying concept, common terminology and principles, common standards and formats, a normalized context for strategic planning and budget formulation, and a universal approach for resolving policy and management issues. It describes the enterprise information systems architecture and its components, including the architecture’s purpose, benefits, characteristics, and structure. The TEAF introduces various architectural views and delineates several modeling techniques. Each view is supported with graphics, data repositories, matrices, or reports (i.e., architectural products).<ref name="WH05"/>

The figure shows a matrix with four views and four perspectives. Essential products are shown across the top two rows of the matrix. It is notable that the TEAF includes an Information Assurance Trust model, the Technical Reference Model, and standards profiles as essential work products. These are not often addressed as critical

framework components. One of these frameworks should provide a means to logically structure and organize the selected EA products. Now, in order to effectively create and maintain the EA products, a toolset should be selected.<ref name="WH05"/>

=== System Interfaceinterface Descriptiondescription ===

[[File:System Interface Description, Levels 1, 2, 3, 4—Generic Examples.jpg|thumb|320px|left|System Interface Description, Levels 1, 2, 3, 4—Generic Examples.]]

The System Interface Description (SID) links together the Organizational and Infrastructure Views by depicting the assignments of systems and their interfaces to the nodes and needlines described in the Node Connectivity Description. The Node Connectivity Description for a given architecture shows nodes (not always defined in physical terms), while the System Interface Description depicts the systems corresponding to the system nodes. The System Interface Description can be produced at four levels, as described below. Level 1 is an essential work product, while Levels 2, 3, and 4 are supporting work products.<ref name="TEAF00"/>

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== See also ==

* [[Department of Defense Architecture Framework]].

* [[Federal Enterprise Architecture]]

* [[Conceptual schema]]

== References ==

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==External links==

{{CommonscatCommons category|Treasury Enterprise Architecture Framework}}

* [https://web.archive.org/web/20081210032759/http://www.treas.gov/offices/cio/ U.S. Treasury - Office of the CIO] homepage.

* [http://www.opengroup.org/architecture/togaf8-doc/arch/chap37.html Other Architectures and Frameworks], The Open Group 1999-20061999–2006.

[[Category:United States Department of the Treasury]]

[[Category:United States Office of Management and Budget]]

[[Category:Enterprise architecture frameworks]]

[[Category:ReferenceManagement modelsframeworks]]