Why Prompt Engineering Needs Software Architecture Principles (And How I Built PromptDev)

Most prompt libraries treat prompts like plain text snippets or random notes. But if you’re building production-grade AI features or complex system instructions, plain text quickly breaks down. When prompts become multi-layered, you need structure, stacking, version control, and real-time testing—just like actual software code. That’s why I built PromptDev (https://promptdev.site): a developer-first sandbox designed to treat prompt engineering like software architecture. The Problem With Plain T