The document discusses securing the software deployment pipeline. It describes the evolution from separate development and operations teams to integrated DevOps practices using continuous delivery. Continuous delivery allows for faster reaction times to issues like security vulnerabilities, which typically take over 100 days to fix. The document advocates for implementing security practices like static code analysis, vulnerability scanning, and end-to-end security testing at each stage of the software delivery pipeline to find and fix issues early. It notes challenges in current tools being numerous, complex to configure and install. Containerizing these tools is presented as a solution to standardize and simplify their use in the pipeline.