Welcome back to the Kiro Blog Series: From Zero to AI-Native Development. In the first two days , We installed Kiro, explored the environment, and built a simple first project. That part was mostly about getting comfortable with the tool. But today is different. Today is about understanding the core idea behind Kiro spec-driven development. What is a Spec, Really? A spec is a structured description of what you want to build. It is not just documentation, it is the starting point of development. Instead of jumping into code, you define your intent in natural language, and that becomes the foundation for everything else. For example: A simple to-do application where users can add tasks, delete tasks, and mark them as completed, with data stored locally. This helps readers visually connect what a “spec” looks like inside Kiro.…