De facto standard

De facto standard

A de facto standard is a custom, convention, product, or system that has achieved a dominant position by public acceptance or market forces (such as early entrance to the market). De facto is a Latin phrase meaning "concerning the fact" or "in practice".

The term "de facto standard" is used in contrast with obligatory standards (also known as "de jure standards"); or to express the dominant voluntary standard, when there is more than one standard available for the same use.

In social sciences, a voluntary standard that is also a de facto standard is a typical solution to a coordination problem.[1] The choice of a de facto standard is the better choice for situations in which all parties can realize mutual gains, but only by making mutually consistent decisions. In contrast, a enforced "de jure standard" is a solution to the prisoner's problem.[1]



A selection of well-known and illustrative examples of de facto and de jure standards:

  • with consolidation by tradition of use:
    • The driver's seat side in a given country starts as a user/industry preference, turning to a local tradition, then a traffic code local norm.
    • The QWERTY system was one of several options for the layout of letters on typewriter (and later keyboard) keys. It was developed to prevent adjacent keys from jamming on early and later mechanical typewriters, often attributed to the typist's speed.[2] It became a de facto standard because it was used on the most commercially successful early typewriters.
    • The MP3 audio format started as an alternative to CD WAV (lossless format) for Internet music distribution, then replaced it — it is now supported by the vast majority of music players, audio transport, audio storage and noncommercial media. WAV and MP3 are also "de jure ISO formats".
  • with consolidation by uniqueness and efficiency:
    • HTML (computer file format) started as "de facto" (1993-1995) and became the "de jure" standard (1995-present-day).
    • The PDF (computer file format) was first created in 1993 by Adobe. Adobe internal standards were part of its software quality systems, but they were neither published nor coordinated by a standards body. With the Acrobat Reader program available for free, and continued support of the format, PDF eventually became the de facto standard for printable web documents and e-books. In 2005, PDF/A became a de jure standard as ISO 19005-1:2005.[3] As of 2007, PDF 1.7 is under development as ISO/DIS 32000.[4][5]

Examples of long-time de facto but never de jure standards (for computer file formats):

  • AutoCAD DXF: a de facto ASCII format for import and export of CAD drawings and fragments in the 1980s and 1990s. In the 2000s, XML based standards emerged as de facto standards.
  • Microsoft Word DOC (over all other old PC word processors): one of the best known de facto standards. Due to the market dominance of Word, it is supported by all office applications that intend to compete with it, typically by reverse engineering the undocumented file format. Microsoft has repeatedly internally changed the file specification between versions of Word to suit their own needs, while continuing to reuse the same file extension identifier for different versions.

Other examples:

  • The 1/2-inch (12.7 mm) spacing of the rollers in a bicycle chain.
  • The IBM Personal Computer format, which used MS-DOS and Microsoft Windows operating systems, gained a large share of the personal computer market. Competing products like the Rainbow 100 were eventually withdrawn.
  • Interpreted programming languages such as PHP that have multiple implementations tend to also have a de facto standard. In PHP's case the de facto standard is the binaries available from, rather than the Phalanger implementation for example.

Standards battles

There are many examples of de facto consolidation (of a standard) by market forces and competition, in a two-sided market, after a dispute. Examples:

Examples of standards that are "in dispute" for turns de facto:

See also


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Look at other dictionaries:

  • De-facto-Standard — Ein De facto Standard oder Quasi Standard bezeichnet eine Spezifikation oder eine definierbare Verfahrensweise, die zwar nicht von einem offiziellen staatlichen Organ oder einem Konsortium als Industrienorm oder Industriestandard anerkannt wurde …   Deutsch Wikipedia

  • de facto standard — neoficialus standartas statusas Aprobuotas sritis Gynyba apibrėžtis Pramonės praktinės veiklos rezultatas, tapęs dominuojančiu tokiu mastu, tarsi būtų galiojantis standartas. atitikmenys: angl. de facto standard pranc. norme de facto šaltinis… …   Lithuanian dictionary (lietuvių žodynas)

  • De-facto-Standard — De facto Standard,   Hardware, Software oder Methoden, die sich auf dem Markt durchgesetzt haben und zu denen es keine nennenswerte Konkurrenz mehr gibt, die jedoch nicht von einer Standardisierungsorganisation, wie etwa ANSI, als offizieller… …   Universal-Lexikon

  • De-Facto-Standard — ein nicht von einer offiziellen Standardisierungsorganisation definierter Standard, der gleichwohl weitgehend eingehalten wird …   Lexikon der Economics

  • de facto standard — /deɪ ˌfæktəυ stændəd/ noun a standard set in a particular market by a highly successful product or service …   Marketing dictionary in english

  • Standard (disambiguation) — Standard may refer to:AutomotiveAmerican cars* Standard (1904 automobile) * Standard (1912 automobile) * Standard Six * Standard Steam CarGerman cars* Standard (1911 automobile) * Standard (1933 automobile)Other* Standard Motor Company (1903… …   Wikipedia

  • Standard — Ein Standard ist eine vergleichsweise einheitliche oder vereinheitlichte, weithin anerkannte und meist auch angewandte (oder zumindest angestrebte) Art und Weise, etwas herzustellen oder durchzuführen, die sich gegenüber anderen Arten und Weisen… …   Deutsch Wikipedia

  • Standard — Contents 1 Flags 2 Automotive 2.1 American cars 2.2 British …   Wikipedia

  • Standard language — A standard language (also standard dialect, standardized dialect, or standardised dialect) is a particular variety of a language that has been given either legal or quasi legal status. As it is usually the form promoted in schools and the media,… …   Wikipedia

  • Standard industriel — Normes et standards industriels Une norme industrielle est un référentiel publié par un organisme de normalisation comme par exemple AFNOR, CEN, ISO, OASIS. Comme la langue anglaise ne marque pas la différence entre norme et standard… …   Wikipédia en Français

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