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The International Organization for Standardization, widely known as ISO, is a non-governmental international standard-setting body composed of representatives from various national standards organizations. Founded in 1947, the organization promulgates worldwide proprietary industrial and commercial standards. It has its headquarters in Geneva, Switzerland.

The organization's has logos in its two official languages, English and French, including the word ISO, and it is usually referred to by this short form name. ISO is not an acronym for the organization's full name in either official language. Rather, the organization adopted ISO based on the Greek word isos, meaning equal. Recognizing that the organization’s initials would be different in different languages, the organization's founders chose ISO as the universal short form of its name. This, in itself, reflects the aim of the organization: to equalize and standardize across cultures.

Members, technical program and staff
As of 2009, ISO had 160 national standards organizations as members out of the 195 total countries in the world. ISO's technical program comprised 208 technical committees, 531 subcommittees, 2,378 working groups and 66 ad hoc study groups, for a total of 3,183 technical bodies.

Also as of 2009, the central headquarters in Geneva had a full-time staff of 153 people from 26 different countries. In addition, 39 of the member bodies provided administrative and technical services for the technical program bodies. Those services involved a full-time staff equivalent to 500 persons.

ISO has three membership categories:
 * Member bodies are national bodies that are considered to be the most representative standards body in each country. These are the only members of ISO that have voting rights.
 * Correspondent members are countries that do not have their own standards organization. These members are informed about ISO's work, but do not participate in standards promulgation.
 * Subscriber members are countries with small economies. They pay reduced membership fees, but can follow the development of standards.

International Standards and other publications
ISO's main products are the International Standards. ISO also publishes Technical Reports, Technical Specifications, Publicly Available Specifications, Technical Corrigenda, and Guides. As of 2009, ISO had published more than 18,000 standards.

International Standards are identified in the format ISO [/IEC] [/ASTM] [IS] [nnnnn:yyyy] [Title], where nnnnn is the identifying number of the standard, yyyy is the year published, and Title is the title of the standard. IEC for International Electrotechnical Commission is included if the standard results from the work of ISO/IEC JTC1 (the ISO/IEC Joint Technical Committee). ASTM is used for standards developed in cooperation with ASTM International. IS (an abbreviation of "International Standard") is prepended to the identifying number of the standard. The publication year and IS are not used for an incomplete or unpublished standard, and may under some circumstances be left off the title of a published work.

Technical Reports are issued when "a technical committee or subcommittee has collected data of a different kind from that which is normally published as an International Standard". such as references and explanations. The naming conventions for these are the same as for standards, except TR (instead of IS) is prepended to the standard's number in the report's name. Examples:
 * ISO/IEC TR 17799:2000 Code of Practice for Information Security Management
 * ISO/TR 19033:2000 Technical product documentation — Metadata for construction documentation

Technical Specifications can be produced when "the subject in question is still under development or where for any other reason there is the future but not immediate possibility of an agreement to publish an International Standard". Publicly Available Specifications may be "an intermediate specification, published prior to the development of a full International Standard, or in IEC it may be a publication published in collaboration with an external organization". By convention, both are named in a manner similar to naming Technical Reports. For example:
 * ISO/TS 16952-1:2006 Technical product documentation — Reference designation system — Part 1: General application rules
 * ISO/PAS 11154:2006 Road vehicles — Roof load carriers

Technical Corrigendums are sometimes issued by ISO. These are amendments to existing standards because of minor technical flaws, usability improvements, or to extend applicability in a limited way. Generally, these are issued with the expectation that the affected standard will be updated or withdrawn at its next scheduled review.

ISO Guides are meta-standards covering "matters related to international standardization". They are named in the format ISO [/IEC] [Guide] [nnnn:yyyy] [Title], for example:
 * ISO/IEC Guide 2:2004 Standardization and related activities – General vocabulary
 * ISO/IEC Guide 65:1996	General requirements for bodies operating product certification

Standardization process (redone to here)
A standard published by ISO/IEC is the last stage of a long process that commonly starts with the proposal of new work within a committee. Here are some abbreviations used during that long process:

Abbreviations for indicating status within the process:


 * PWI: Preliminary Work Item
 * NP or NWIP: New Proposal or New Work Item Proposal
 * AWI: Approved new Work Item
 * WD: Working Draft
 * CD: Committee Draft
 * FCD: Final Committee Draft
 * DIS: Draft International Standard
 * FDIS: Final Draft International Standard
 * PRF: Proof of a new International Standard
 * IS: International Standard

Abbreviations used for amendments:


 * NP Amd: New Proposal Amendment
 * AWI Amd: Approved new Work Item Amendment
 * WD Amd: Working Draft Amendment
 * CD Amd or PDAmd: Committee Draft Amendment or Proposed Draft Amendment
 * FPDAmd or DAM (DAmd): Final Proposed Draft Amendment or Draft Amendment
 * FDAM (FDAmd): Final Draft Amendment
 * PRF Amd:
 * Amd: Amendment

Other abbreviations:


 * TR:Technical Report
 * DTR: Draft Technical Report
 * TS: Technical Specification
 * DTS: Draft Technical Specification
 * TTA: Technology Trends Assessment
 * IWA: International Workshop Agreement
 * Cor: Technical Corrigendum )

International Standards are developed by ISO technical committees (TC) and subcommittees (SC) by a process with six steps:


 * Stage 1: Proposal stage
 * Stage 2: Preparatory stage
 * Stage 3: Committee stage
 * Stage 4: Enquiry stage
 * Stage 5: Approval stage
 * Stage 6: Publication stage

The TC/SC may set up working groups (WG) of experts for the preparation of a Working Drafts. Subcommittees may have several working groups, which can have several Sub Groups (SG).

It is possible to omit certain stages, if there is a document with a certain degree of maturity at the start of a standardization project - for example a standard developed by another organization. ISO/IEC Directives allow also the so-called "Fast-track procedure". In this procedure a document is submitted directly for approval as a draft International Standard (DIS) to the ISO member bodies or as a final draft International Standard (FDIS) if the document was developed by an international standardizing body recognized by the ISO Council.

The first step - a proposal of work (New Proposal) is approved at the relevant subcommittee or technical committee (e.g. SC29 and JTC1 respectively in the case of Moving Picture Experts Group - ISO/IEC JTC1/SC29/WG11). A working group (WG) of experts is set up by the TC/SC for the preparation of a Working Draft. When the scope of a new work is sufficiently clarified, some of the working groups (e.g. MPEG) usually make open request for proposals - known as "Call for proposals". The first document that is produced for example for audio and video coding standards is called a Verification Model (VM) (previously also called a Simulation and Test Model). When a sufficient confidence in the stability of the standard under development is reached, a Working Draft (WD) is produced. This is in the form of a standard but is kept internal to working group for revision. When a Working Draft is sufficiently solid and the working group is satisfied that it has developed the best technical solution to the problem being addressed, it becomes Committee Draft (CD). If it is required, it is then sent to the P-members of the TC/SC (National Bodies) for ballot. The CD becomes Final Committee Draft (FCD) if the number of positive votes is above the quorum. Successive committee drafts may be considered until consensus is reached on the technical content. When it is reached, the text is finalized for submission as a draft International Standard (DIS). The text is then submitted to National Bodies for voting and comment within a period of five months. It is approved for submission as a final draft International Standard (FDIS) if a two-thirds majority of the P-members of the TC/SC are in favour and not more than one-quarter of the total number of votes cast are negative. ISO will then hold a ballot with National Bodies where no technical changes are allowed (yes/no ballot), within a period of two months. It is approved as an International Standard (IS) if a two-thirds majority of the P-members of the TC/SC is in favour and not more than one-quarter of the total number of votes cast are negative. After approval, only minor editorial changes are introduced into the final text. The final text is sent to the ISO Central Secretariat which publishes it as the International Standard.

ISO/IEC Joint Technical Committees
To deal with the consequences of substantial overlap in areas of standardization and work related to information technology, ISO and IEC formed a Joint Technical Committee in 1987 known as the ISO/IEC JTC1. It was the first such joint committee.

The second joint committee was created in 2009 known as ISO/IEC/JTC 2, Joint Project Committee - Energy efficiency and renewable energy sources - Common terminology.