Defense in depth is an information assurance technique to protect a system from any particular attack by having multiple independent countermeasures in place. In a containerized world, defense in depth is applied by thinking about security within a container, on the container host and at the container platform layer. This talk will cover numerous technologies and practices at each layer. From kernel quality, svirt, and SECCOMP, to measuring attack surface, use of root and patch remediation, to platform level authentication and authorization, these are the droids you are looking for. This talk will help an end user understand the breadth of tooling that is available at each level and how they will help protect their system from intrusions and compromises.