Enterprise Architecture

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ISO/IEC/IEEE 42010 Systems and software engineering — Architecture description is an international standard for architecture descriptions of systems and software. Overview[edit] ISO/IEC/IEEE 42010:2011 defines requirements on the description of system, software and enterprise architectures. ISO/IEC 42010 ISO/IEC 42010
define:Enterprise architecture
TOGAF

ArchiMate/OpenGroup
Enterprise architecture

Enterprise architecture

Enterprise architecture (EA) is "a well-defined practice for conducting enterprise analysis, design, planning, and implementation, using a holistic approach at all times, for the successful development and execution of strategy. Enterprise Architecture applies architecture principles and practices to guide organizations through the business, information, process, and technology changes necessary to execute their strategies. These practices utilize the various aspects of an enterprise to identify, motivate, and achieve these changes."[1]
Zachman

GODS One PAge Business Architecture v3.gif (GIF Image, 960×720 pixels)
Enterprise Architecture & TOGAF
A generic Business Architecture What are the essential parts of an Enterprise? At the beginning of the '80es, Michael Porter suggested that any Enterprise consists of two categories of activities: Primary activities, which are the operational processes that deliver the product such as inbound logistics, Operations. Outbound logistics, Sales and Services And Secondary activities that are all other supporting activities , as for example Human Resources, Technology Development, Procurement etc. Taking into account the dynamics of today's economy, I concluded though that Development activities are worth a category in themselves since a great chunk of them, such as strategy and business development, new products and capabilities development or R&D ensure the competitive edge of the Enterprise and its continuity. In a world that spins faster and faster, more and more activities are outsourceable and outsourced, even Operations, once a core activity. A generic Business Architecture