Functional testing

Functional testing validates that a product’s functionality remains stable and consistent when adapted for different languages and markets. It ensures that global users experience the same quality, reliability and usability – regardless of locale or platform.

In the context of localization, functional testing goes beyond basic language checks. It confirms that translated text displays correctly, that buttons, menus and forms work as expected and that no cultural or linguistic adaptation has disrupted core functionality. Testers simulate real user interactions to identify bugs or errors introduced during the localization process – from broken links and truncated text to currency formatting and data-entry validation. Functional testing can be performed manually by Quality assurance specialists or through automated scripts that replicate complex user scenarios at scale. When combined with Linguistic testing, it forms a complete quality assurance process – one that guarantees localized products are not only correct in language, but also reliable, accessible and ready for global launch.

At RWS, functional testing is an essential step in ensuring that global products perform perfectly – everywhere. We combine expert testers, proven QA frameworks and intelligent automation to validate every aspect of localized software and content.

Our teams work across web, mobile, desktop and embedded systems to ensure multilingual products behave exactly as designed. By integrating functional and linguistic testing, we deliver comprehensive quality assurance that supports both technical performance and cultural accuracy. Through a blend of human expertise and intelligent technology, RWS helps organizations launch confidently into new markets – with products that look, sound and work flawlessly across every language and platform.