The IRS EA provides the blueprint for modernizing the IRS. It illustrates how these programs and projects fulfill business goals and objectives for IRS domains, the IRS and Treasury. The EA describes the enterprise-level, future-state functional requirements that will support the IRS. To demonstrate alignment of major IT investments with the FEA Service Component Reference Model (SRM). Table 8 enumerates and describes each of the components. It uses EA methods and visualizations to depict the complex interrelationships between the envisioned business capabilities, data, applications and systems, technologies and infrastructure. Five categories of performance requirements are specified, including Enterprise Workload, Enterprise Response Time, Enterprise Reliability, Maintainability, and Availability Requirements. The vision and strategy framework is built on the functional segmentation of the IRS, representing the core mission business functions that directly relate to front-line tax administration. The following list includes all the Technology Work Products: The Security and Privacy Work Products are a subset of the Systems Architecture work products. Therefore, they have been supplemented by information from sources such as the tax statistics area of http://www.irs.gov. Customer Service: provides tax law and compliance assistance, taxpayer education, and taxpayer account, refund, and notice inquiries. Security Processing Thread (part of the Security Architecture work product). The EA provides business scenarios that demonstrate how selected business processes contained in the EA support key business events. (3). Data models of more than a few data classes are organized as a hierarchy of subject areas, each more narrowly defined than the subject area containing it, until they are small enough to allow comprehension of the entire subject area in a diagram or two. Documents and data about how the IRS conducts business. Information architecture: identifies where and … Sensitivity Classification of ECDM Data Classes (part of the Data Requirements work product). Filing and Payment Compliance: includes collecting delinquent tax obligations and securing delinquent tax returns. The ELC Domains of Change view of the EA is really a summarization of all the technical components of the EA as they guide the development of systems. Like other business enterprises, the IRS offers an array of services, similar to a menu or catalog of services that identifies the various products and services that one can obtain from that business enterprise. bill yarberry says: … (Each mechanism corresponds to one or more security requirements specified in the Security Requirements model). The focus is on functional and physical locations that are durable over time. There are four architecture domains that are commonly accepted as subsets of an overall Enterprise Architecture, all of which the TOGAF standard is designed to support: The Business Architecture … It informs, guides, and constrains all IRS IT Projects in how to optimize the interdependencies and interrelationships among business operating divisions and the underlying IT that supports operations. These performance requirements are primarily based on the performance goals specified in the Process Thread Performance Matrix (provided in the EA’s Performance Architecture section). Segment architecture is developed to support a clear and concise value proposition linked to the agency mission, as well as to its strategic goals and objectives. the following list includes all the Security and Privacy Work Products: Federal Laws and Regulations Applicable to Security and Privacy (part of the Programmatic Requirements Work Product). The EA describes the Enterprise-level, future-state functional requirements that will support the modernized IRS. Twenty years ago, a new field was born that soon came to be known as enterprise architecture. In addition, EA manages performance, functional, and system management requirements and provides traceability of data and functional requirements to business processes. Business drivers defined in the business architecture lead to the elaboration of functional and technical requirements. While the business architecture covers concepts related to business process, organization, and location, the technical architecture covers concepts and strategies related to data, applications, and technology. To demonstrate alignment and support of the FEA Performance Reference Model. STM is essential to the successful alignment of individual products, standards, and technologies to the Target Enterprise Architecture. Assessing all proposed business and application solutions in the context of the business services offered, business process visions, and high level designs to ensure alignment. So what are the fundamental building blocks and business architecture components? The Business Work Products define all business-related aspects of the target state including business processes, organization, and location. Consolidating or standardizing similar processes and services – as appropriate. The data the IRS receives and works with in its day-to-day processing of individual transactions. The purposes of this IRM are to: Define the EA and depict the key components of EA, Define how the EA fits within the concept of operations for the business. Enterprise Transition Architecture and its sub-components including Enterprise Transition Strategy, Release Architecture and Enterprise-wide Sequencing Plan. The Target Architecture is available through a Web-based two-layer framework providing access to the major components of the Enterprise Architecture: The Target EA Framework provides pre-established views or perspectives across multiple EA functions as the means to access small content segments based on specific EA topics. It also provides information on service definition. The IRS Technology blueprint is a living document that is continuously reviewed and updated as appropriate. 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