Information Technology (IT), as defined by the Information Technology Association of America (ITAA), is "the study, design, development, implementation, support or management of computer-based information systems, particularly software applications and computer hardware." IT deals with the use of electronic computers and computer software to convert, store, protect, process, transmit, and securely retrieve information.
Today, the term information technology has ballooned to encompass many aspects of computing and technology, and the term is more recognizable than ever before. The information technology umbrella can be quite large, covering many fields. IT professionals perform a variety of duties that range from installing applications to designing complex computer networks and information databases. A few of the duties that IT professionals perform may include data management, networking, engineering computer hardware, database and software design, as well as the management and administration of entire systems. When computer and communications technologies are combined, the result is information technology, or "infotech". Information Technology (IT) is a general term that describes any technology that helps to produce, manipulate, store, communicate, and/or disseminate information. Presumably, when speaking of Information Technology (IT) as a whole, it is noted that the use of computers and information are associated.
 Professional organizations
The Canadian Information Processing Society (CIPS) is the largest professional body for computing in Canada.
NASSCOM is an association of Indian IT companies.
AITech-Assinform, Information Technology Association is an association of Italian IT companies.
The Computer Society of India (CSI) is the national body representing computer professionals.
The British Computer Society (BCS) is a UK body that represents those working in IT. It is the largest United Kingdom based professional body for computing, with a world-wide membership of over 58,000 members in over 100 countries.
The Union of Information Technology Enterprises (UITE) of Armenia is the first and the biggest IT Association of Armenia. 
The Association for Computing Machinery(ACM) 
The Information Technology Association of America (ITAA) is an industry trade group for several U.S. information technology companies.
The Australian Computer Society (ACS) is the recognised association for Information & Communications Technology (ICT) professionals in Australia.
The Australian Information Industry Association is the national organisation representing the ICT companies in Australia.
The Philippine Software Industry Association is an association of Philippine IT companies.
The Information Technologies Institute, Marmara Research Center, The Scientific and Technological Research Council of Turkey
The Computer Manufacturers, Distributors, and Dealers Association of the Philippines is an association of leading players in Philippine IT industry.
The Council of European Professional Informatics Societies (CEPIS) is a non-profit organisation that promotes high standards among Informatics Professionals in recognition of the impact that Informatics has on employment, business and society. CEPIS represents 37 Member Societies in 33 Countries across greater Europe.