Kentico CMS websites can host content in multiple languages (cultures). Multilingual websites have separate versions of documents for each language. The system allows you to automatically offer particular culture versions of the website to visitors based on various settings. Users may also switch between individual languages manually using a dedicated web part.
You can find a list of the available content cultures in Site Manager -> Development -> Cultures. All major cultures are provided by default. You can assign these cultures to websites and then translate the content to the respective languages.
The administration interface of Kentico CMS can also be multilingual. To learn more, refer to the Development -> UI cultures and localization chapter of this guide.