As globalization continues to expand market reach, multinational corporations (MNCs) increasingly rely on digital marketing strategies to enhance their visibility, credibility, and customer engagement. This study examines the effectiveness of search engine optimization (SEO), social media marketing, email promotions, and localization in influencing consumer perceptions and driving international market success. Using statistical analyses, including ANOVA and Chi-square tests, the findings indicate that SEO credibility varies by gender, while email marketing is equally effective across demographics. Additionally, digital engagement strategies such as personalized content and interactive campaigns are perceived positively across all age groups, highlighting their universal applicability. Furthermore, digital marketing has a statistically significant impact on purchase decisions, emphasizing its role as a key driver of consumer behaviour. These insights provide strategic recommendations for optimizing digital marketing efforts in global markets