Linux has many security features and tools that have evolved over the years to address threats as they emerge and security gaps as they are discovered. Linux security is all, as Lennart Poettering observed at the All Systems Go! conference held in Berlin, somewhat random and not a "clean" design. To many observers, that may also appear to be the case for systemd; however, Poettering said that he does have a vision for how all of the security-related pieces of systemd are meant to fit together. He wanted to use his talk to explain "how the individual security-related parts of systemd actually fit together and why they exist in the first place".