This report provides an overview of NIST Special Publication 800-64 Revision 2, focusing on security considerations within the System Development Life Cycle (SDLC). The report begins by introducing NIST 800-64 Rev2 and its purpose, which is to assist organizations in integrating security into the SDLC. It outlines the importance of security in the SDLC, including enhanced system maintenance and reduced costs. The report then delves into the six phases of SDLC security integration: investigation, analysis, logical design, physical design, implementation, and maintenance and change. Each phase is described in detail, highlighting key activities and considerations. Specifically, the report covers identification of process, outcome, and goals; review of existing security policies; the development of security blueprints; risk analysis; technology selection; and physical security measures. The final section addresses the ongoing monitoring, testing, and updating required to maintain security. This document is designed to help students and professionals understand the critical aspects of securing IT systems during their development and lifecycle management. This report is available on Desklib, a platform that provides students with access to past papers and solved assignments.