The purpose of the OASIS DITA Technical Committee (TC) is to define and maintain the Darwin Information Typing Architecture (DITA) and to promote the use of the architecture for creating standard information types and domain-specific markup vocabularies.
 
DITA is specializable, which allows for the introduction of specific semantics for specific purposes without increasing the size of other DTDs, and which allows the inheritance of shared design and behavior and interchangeability with unspecialized content.