Localization and Internationalization

What is the difference between Localization and Internationalization in the world wide web context? What are they and why do we designers and developers need to know?

The Lead of W3C Internationalisation — Richard Ishida (blog) during his visit to Australia conducted seminars in Melbourne and Canberra asking developers to think futuristically to allow for greater localisation of Websites and Web applications.

What is Localization?
What is Internationalization?
How to get involved?
Photos

What is Localization?

Localization refers to the adaptation of a product, application or document content to meet the language, cultural and other requirements of a specific target market (a “locale”). Localization is sometimes written as “l10n”, where 10 is the number of letters between ‘l’ and ‘n’. Often thought of only as a synonym for translation of the user interface and documentation, localization is often a substantially more complex issue. It can entail customization related to:

Numeric, date and time formats
Use of currency
Keyboard usage
Collation and sorting
Symbols, icons and colors
Text and graphics containing references to objects, actions or ideas which, in a given culture, may be subject to misinterpretation or viewed as insensitive.
Varying legal requirements
and many more things.

Localization may even necessitate a comprehensive re-thinking of logic, visual design, or presentation if the way of doing business (eg., accounting) or the accepted paradigm for learning (eg., focus on individual vs. group) in a given locale differs substantially from the originating culture.

What is Internationalization?

Definitions of internationalization vary. This is a high-level working definition for use with W3C Internationalization Activity material. Some people use other terms, such as ‘globalization‘ to refer to the same concept.

Internationalization is the design and development of a product, application or document content that enables easy localization for target audiences that vary in culture, region, or language.

Internationalization is often written “i18n”, where 18 is the number of letters between ‘i’ and ‘n’ in the English word.

Internationalization typically entails:

Designing and developing in a way that removes barriers to localization or international deployment. This includes such things as enabling the use of Unicode, or ensuring the proper handling of legacy character encodings where appropriate, taking care over the concatenation of strings, avoiding dependance in code of user-interface string values, etc.
Providing support for features that may not be used until localization occurs. For example, adding markup in your DTD to support bidirectional text, or for identifying language. Or adding to CSS support for vertical text or other non-Latin typographic features.
Enabling code to support local, regional, language, or culturally related preferences. Typically this involves incorporating predefined localization data and features derived from existing libraries or user preferences. Examples include date and time formats, local calendars, number formats and numeral systems, sorting and presentation of lists, handling of personal names and forms of address, etc.
Separating localizable elements from source code or content, such that localized alternatives can be loaded or selected based on the user’s international preferences as needed.

Notice that these items do not necessarily include the localization of the content, application, or product into another language; they are design and development practices which allow such a migration to take place easily in the future but which may have significant utility even if no localization ever takes place.