A language detection method is a way for your site to decide what language should be used to display text. This decision is made by evaluating a series of detection methods for languages; the first detection method that gets a result will determine which language is used. If you have more than one language on your site, you can configure the detection methods that are used and the order they are evaluated, for both user interface text and content text. Configuration text always uses the interface text method, and most sites use the same detection methods for all types of text.