The document discusses localization (L10N) which is the process of adapting products or services for a particular cultural or linguistic market through translation and cultural adaptation. It involves translating text, software, websites and adjusting visual elements and examples to be culturally appropriate. Quality assurance and testing are important parts of localization and involve verifying the localized product works as intended on the target operating systems and accounts for locale-specific issues. Localization projects may involve on-site testing to simulate the end user's in-country experience.