As-code means managing operational logic in version-controlled files rather than relying only on settings stored in a tool’s interface. In detection engineering, this can include rules that identify suspicious activity. Teams can review changes, track who made them, and restore earlier versions when needed.
This approach helps make security logic repeatable and maintainable. For example, defenders can test detection rules before deploying them and use automated workflows to apply approved changes. Keeping rules in portable files can also make them easier to adapt or move between platforms. Version control does not guarantee that a rule is correct: teams still need to validate it against their data and monitor for gaps or false alerts.