The individual models in an EA are arranged in a logical manner that provides an ever-increasing level of detail about the enterprise. Normally an EA takes the form of a comprehensive set of cohesive models that describe the structure and functions of an enterprise. The UK National Computing Centre EA best practice guidance states: In the case of Enterprise Architecture, these models describe the logical business functions or capabilities, business processes, human roles and actors, the physical organization structure, data flows and data stores, business applications and platform applications, hardware, and communications infrastructure. In practice, an architectural description contains a variety of lists, tables, and diagrams. OneвЂ™s belief with regards to the meaning of enterprise architecture will impact how one sees its purpose, its scope, the means of achieving it, the skills needed to conduct it, and the locus of responsibility for conducting it Architectural description of an enterprise ДЄccording to the standard ISO/IEC/IEEE 42010, the product used to describe the architecture of a system is called an architectural description. Typically, proposals and decisions encompass both the enterprise and its environment. Consequently, a great deal of emphasis is put on improving the capabilities of the enterprise to improve itself, to innovate and to coevolve with its environment. Enterprise ecosystem adaptation вЂ“ the purpose of EA is to foster and maintain the learning capabilities of enterprises so that they may be sustainable.Typically, architecture proposals and decisions encompass all the aspects of the enterprise. Enterprise integrating вЂ“ According to this school of thought, the purpose of EA is to achieve greater coherency between the various concerns of an enterprise (HR, IT, Operations, etc.) including the linking between strategy formulation and execution.Typically, architecture proposals and decisions are limited to the IT/IS aspects of the enterprise other aspects only serve as inputs. The main purpose of enterprise architecture is to guide the process of planning and designing the IT/IS capabilities of an enterprise in order to meet desired organizational objectives. Enterprise IT design вЂ“ the purpose of EA is the greater alignment between IT and business concerns.Perspectives, or beliefs, held by enterprise architecture practitioners and scholars, with regards to the meaning of the enterprise architecture, typically gravitate towards one or a hybrid of three schools of thought: Understood as a socio-technical system, the term enterprise defines the scope of the enterprise architecture. The term architecture refers to fundamental concepts or properties of a system in its environment, embodied in its elements, relationships, and in the principles of its design and evolution. It includes those organizations' complete socio-technical systems, including people, information, processes, and technologies. In that sense, the term enterprise covers various types of organizations, regardless of their size, ownership model, operational model, or geographical distribution. The term enterprise can be defined as describing an organizational unit, organization, or collection of organizations that share a set of common goals and collaborate to provide specific products or services to customers. Topics The terms enterprise and architecture EA is used to steer decision making toward the evolution of the future state architecture.' ДЄt helps business and IT managers to figure out the best strategies to support and enable business development and business change вЂ“ in relation to the business information systems that the business depends on. EA delivers value by presenting business and IT leaders with signature-ready recommendations for adjusting policies and projects to achieve target business outcomes that capitalize on relevant business disruptions. 'Enterprise architecture (EA) is a discipline for proactively and holistically leading enterprise responses to disruptive forces by identifying and analyzing the execution of change toward desired business vision and outcomes. A definition of enterprise architecture as a practice, whichДЄnalyzes areas of common activity within or between organizations, where information and other resources are exchanged to guide future states from an integrated viewpoint of strategy, business, and technology. 2.3 Architectural description of an enterpriseД®nterprise Architects support technology by presenting clear and compelling business cases for investing in technology then holding themselves accountable for producing measurable improvements in mission and operational performance.2.1 The terms enterprise and architecture.

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