Modernization of legacy mainframe applications has been progressing for years. Enterprises take strategic steps to modernize, driven by key business drivers and financial benefits. However, the applications on a modernized platform still require the basic, time-tested skills of software engineering and system architecture. Those same skills laid the foundation for software development at the dawn of IT. When enterprises modernize applications, they should not lose sight of these basic skills. In other words, technology must be modernized while preserving the art of software engineering.