Explore solid software architecture principles for system administrators in this 48-minute conference talk from the International PHP Conference. Discover how Ole Michaelis and Sönke Ruempler from Jimdo challenge the notion that Chef and Puppet automatically provide the best foundation. Learn about essential software patterns and their corresponding antipatterns, including Dependency Inversion, Single Responsibility, Open-Close Principle, Hollywood Principle, Interface Segregation, and Liskov Substitution. Gain insights into practical applications such as Puppet forge, server specs, and sandboxed development to enhance your system administration skills and create more robust software architectures.