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WhatIs.com® is a reference and self-education tool about information technology. The site provides readers with definitions for over 10,000 terms and over 1,000 fast references, cheat sheets and quizzes. WhatIs.com is updated each weekday and is used primarily by information technology (IT) and business professionals.
210 General topics. Conference proceedings. Collections
211 Handbooks. Dictionaries. Encyclopedias. Glossaries
213 Introductory. Survey articles
214 Guides. Vocabulary