This study looks into how secure coding methods can be incorporated into the software development lifecycle (SDLC) to support security-centric software development. The principal aims of this study are to evaluate the importance of incorporating secure coding methods, recognize obstacles and hurdles to implementation, investigate the consequences for software security and quality, and suggest policy measures. Using a secondary data-based review methodology, the study looks at scholarly papers, industry reports, and peer-reviewed literature. Key findings highlight the significance of security integration and its associated difficulties, such as resource limitations and compliance requirements. They also highlight the consequences for software quality and security posture and the policy implications, including the need for collaboration and education. The study emphasizes the importance of constructing secure and robust software systems in today's digital landscape by including secure coding standards in the software development life cycle (SDLC).