This paper investigates the integration of Corporate Social Responsibility (CSR) into external communication strategies and its consequent economic and social impacts. By analyzing various organizational approaches and leveraging a mixed-methods research design, the paper seeks to understand how CSR communication influences corporate reputation, financial performance, and societal well-being. The research begins with a comprehensive review of existing literature on CSR and external communication, identifying key trends and best practices. Case studies from diverse industries are examined to illustrate how companies have successfully incorporated CSR into their communication strategies. These case studies reveal that effective CSR communication can significantly enhance a company's image, foster customer loyalty, and create a competitive edge in the market. The results suggest that companies with robust CSR communication strategies tend to experience higher levels of customer engagement, which translates into increased sales and profitability. Furthermore, the study highlights that transparent and consistent communication of CSR efforts can attract investors and improve employee satisfaction. On the social front, the paper explores how CSR communication contributes to community development and social well-being. Through qualitative interviews, the research demonstrates that when companies transparently communicate their CSR activities, they build trust with stakeholders and promote a positive social impact. Effective CSR communication helps address social issues such as environmental sustainability, education, and health, thereby enhancing the overall quality of life in communities. The study concludes that integrating CSR into external communication strategies is not merely a trend but a strategic necessity for modern businesses. Overall, this paper underscores the importance of CSR in shaping a sustainable and socially responsible business environment, advocating for its central role in corporate communication strategies.