This document discusses DevSecOps and integrating security into the development process. It begins with an introduction to methodologies like Waterfall and Agile development. It then explains how DevOps aims to improve speed and collaboration between developers and operations teams. However, security teams are often separate from this process. DevSecOps aims to shift security left into planning, design, and coding to catch vulnerabilities earlier. It outlines how to implement security practices throughout the development cycle, including threat modeling, security scanning tools, training, and testing. The conclusion is that DevSecOps is becoming more important as the need for secure and private software increases.