Localization of a module means making it possible for people who speak different languages to use the module. It's like translating a book into different languages so that people all over the world can enjoy it.
When we want to localize a module, we have to identify all the words and phrases in the module that people might need to read or understand. These are often things like button labels, error messages, and instructions.
We then create a separate file that contains translations of these words and phrases in different languages. For example, if the module is in English, we might create translations in Spanish, French, German, and so on.
When the module is loaded, it checks what language the user has set on their device and loads the appropriate translation file. This way, if the user is French, for example, they will see all the words and phrases in French instead of English.
Overall, localization makes it easier for people all over the world to use the same module, regardless of what language they speak.