Discuss methodologies for managing systems security throughout their lifecycle. Research and analyze lifecycle models such as the Microsoft Security Development Lifecyle, Agile, DevOps and others to illustrate effective system security management strategies. Recommend an approach or model to adopt for your company that integrates security into system development and maintenance processes. Consider selecting tasks and examples listed in the Secure Software Development Framework (SSDF) Version 1.1 and SDL practices listed in the Security Development Lifecycle (SDL) Practices document.