Localization testing is a software testing approach that examines the quality of a software product concerning a specific target audience's region, locality, language, culture, or technical expectations. The purpose of localization testing is to ensure that the behavior of a software product is appropriate for users in a specific region. It is performed on the product's localized version and can help businesses avoid extra expenses associated with reworking applications and fixing localization bugs in production. By incorporating localization testing into the SDLC process, teams can reduce costs, save time, and ensure compliance with local laws and regulations. The benefits of localization testing include reducing customer churn by enhancing user experience, increasing revenue streams, and helping expand to new markets. To perform effective localization testing, businesses should define a localization strategy, establish and monitor localized KPIs, test early and often, automate localization testing, and plan for internationalization. With the help of tools like Sauce Labs, which provides comprehensive coverage, data analytics, and reporting dashboards, businesses can streamline operational procedures, lower the likelihood of localization errors, and improve localization accuracy.