Want Cleaner Code? Master Domain-Driven Design Now!

Your frameworks will change. Your databases will change. But your *business rules* — your domain logic — that’s your competitive advantage. In this episode of Context Coding, we extract domain models from our Prompt Manager to make the code cleaner, more testable, and easier to understand. This is Domain-Driven Design in action — putting your business rules at the center of your architecture. What You’ll Learn • How to identify domain logic hidden in routes and frameworks • Why pure domain code has no external dependencies • The power of clarity, testability, and portability • How to structure your project for long-term flexibility • What it looks like to ship a real open-source project: Prompt Manager v1 Tools & References • Python • Flask • pytest • Cursor • Claude • Domain-Driven Design by Eric Evans • Working Effectively with Legacy Code by Michael Feathers 🕒 Timestamps 0:00 Why Domain Models Matter 1:00 Extracting Pure Logic 3:00 Refactoring with Claude 4:00 Why Framework Independence Wins 6:00 Results & Metrics (447 Tests, 90% Coverage) 7:30 Version 1 Released — What’s Next Download Prompt Manager v1 on GitHub: https://github.com/ThePassionateProgrammer/prompt-manager #DomainDrivenDesign #CleanCode #Python #AIDrivenAgile #ContextCoding ---- Most leaders are still using AI like a glorified intern. But when used right, AI becomes a force multiplier for Agile. I created the **AI for Agile Toolkit** to show you how. - Automate workflows across your stack - Use prompt-driven dashboards to uncover insights - Enhance team coaching with AI - Learn 10 prompt patterns every Agile leader should master Grab your free copy here -- https://passprog.com/aiforagile —— Software development isn’t just about writing code—it’s about thinking deeply, modeling reality, and building systems that last. The world is changing, and AI is transforming how we write code. But most teams struggle to integrate AI effectively, and Agile has lost its way. At The Passionate Programmer, I help developers and teams rediscover their passion for the craft of software development. Through AI-powered Agile practices, Extreme Programming, and a deep understanding of design patterns, I teach developers how to build software that is flexible, scalable, and built to last. If you’re a software developer, tech lead, or engineering manager who wants to use AI to elevate your craft rather than replace thinking, you’re in the right place. Welcome! And if you like what you see then let’s talk about working together. I offer customized coaching and training to integrate AI into software development. To learn more about integrating AI into Agile technical practices, contact me at The Passionate Programmer - https://PassProg.com. Expand Your Knowledge with My Books - “Beyond Legacy Code: Nine Practices to Extend the Life and Value of Your Software” Learn essential practices for writing quality code more rapidly and with fewer defects: https://BeyondLegacyCode.com - “Prompt Engineering for Everyone: A Comprehensive Guide to Unlock the Potential of ChatGPT and AI Language Models.” Get actionable techniques to unlock the full potential of AI. Learn more at https://passprog.com/pefe/ Join the Conversation Do you have questions, suggestions, or thoughts? Please share them in the comments below—I’d love to hear from you! #ThePassionateProgrammer #DavidScottBernstein #SoftwareDevelopment #AIPromptEngineering #DDD #domaindrivendesign