A Comparative Study of SSDLC Adoption: Challenges and Best Practices in Small and Medium-Sized Enterprises and Large Organizations

The Secure Software Development Lifecycle (SSDLC) integrates security measures throughout the software development process. Despite its importance in minimizing vulnerabilities, adoption varies significantly across organizations. This paper examines the challenges and best practices associated with SSDLC adoption in Small and Medium-sized Enterprises (SMEs) compared to large organizations. Through a literature review, theoretical analysis, case studies, and comparative evaluation, the research identifies key barriers and proposes actionable strategies for improving secure development practices.