Software teams often face a false choice: move fast and accumulate technical debt, or build the perfect system and miss the deadline. But there may be a third path, the Best Simple System for Now (BSSN). This session introduces a pragmatic yet principled approach to software design: systems that are as simple as possible but no simpler. You’ll learn how to design code that is robust, change-friendly, and fit for purpose, while avoiding both gold-plating and corner-cutting. Through practical examples, we explore how to manage complexity, embrace uncertainty, and make sound decisions using concepts like Cost of Delay and RAROC.