Information Technology Architecture

A five level pyramid model of different types of Information Systems based on the information processing requirement of different levels in the organization. The first level represents transaction processing systems to process basic data. The second level represents office support systems to process information in office. The third level represents management information systems to process information by managers. The fourth level represents decision support systems to process explicit knowledge. The fifth level represents executive information systems to process tacit knowledge.
"A Computer(-Based) Information System is essentially an IS using computer technology to carry out some or all of its planned tasks. The basic components of computer based information system are:
(1) Hardware - these are the devices like the monitor, processor, printer and keyboard, all of which work together to accept, process, show data and information.
(2) Software - are the programs that allow the hardware to process the data.
(3) Databases - are the gathering of associated files or tables containing related data.
(4) Networks - are a connecting system that allows diverse computers to distribute resources.
(5) Procedures - are the commands for combining the components above to process information and produce the preferred output.
The first four components (hardware, software, database and network) make up what is known as the information technology platform. Information technology workers could then use these components to create information systems that watch over safety measures, risk and the management of data. These actions are known as information technology services." [Information systems. Wikipedia]
This pyramid diagram was redesigned using the ConceptDraw PRO diagramming and vector drawing software from Wikimedia Commons file Five-Level-Pyramid-model.png. [commons.wikimedia.org/ wiki/ File:Five-Level-Pyramid-model.png]
This file is licensed under the Creative Commons Attribution 3.0 Unported license. [creativecommons.org/ licenses/ by/ 3.0/ deed.en]
The triangle chart example "Information systems types" is included in the Pyramid Diagrams solution from the Marketing area of ConceptDraw Solution Park.

This enterprise architecture diagram sample was redesigned from the illustration of the NIH Enterprise Architecture website. [enterprisearchitecture.nih.gov/ Pages/ Framework.aspx]
"Enterprise architecture is a comprehensive framework used to manage and align an organization's Information Technology (IT) assets, people, operations, and projects with its operational characteristics. In other words, the enterprise architecture defines how information and technology will support the business operations and provide benefit for the business.
It illustrates the organization’s core mission, each component critical to performing that mission, and how each of these components is interrelated. These components include:
(1) Guiding principles,
(2) Organization structure,
(3) Business processes,
(4) People or stakeholders,
(5) Applications, data, and infrastructure,
(6) Technologies upon which networks, applications and systems are built.
Guiding principles, organization structure, business processes, and people don’t sound very technical. That’s because enterprise architecture is about more than technology. It is about the entire organization (or enterprise) and identifying all of the bits and pieces that make the organization work." [enterprisearchitecture.nih.gov/ Pages/ what.aspx]
The example "NIH IT enterprise architecture framework" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Enterprise Architecture Diagrams solution from the Management area of ConceptDraw Solution Park.

This enterprise architecture diagram sample was drawn on the base of the figure illustrating the webpage "Enterprise Architecture" from the United States Department of Agriculture (USDA) website.
"The USDA's Enterprise Architecture program strategically partners with all agencies to provide value to USDA's mission areas, business processes, and Information Technology (IT) capabilities.
Introduction.
The USDA Enterprise Architecture (EA) helps make sure information technology investments align with the mission and goals of the Department. It defines how information and technology should support USDA’s strategic goals and benefit the business.
Purpose.
The intent of the USDA Enterprise Architecture is to help make the information technology (IT) expenditures more effectively serve the mission and goals of the organization. Enterprise architecture defines how information and technology support USDA’s strategic planning to benefit our business. There are many ways to organize the information and diagrams that make up the architecture."
[ocio.usda.gov/ about-ocio/ governance-and-strategic-investment-gsi/ enterprise-architecture]
The enterprise architecture diagram example "USDA's Enterprise Architecture" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Enterprise Architecture Diagrams solution from the Management area of ConceptDraw Solution Park.