Notes on independent development, infrastructure, and AI tooling.https://alexanderlapygin.com/https://alexanderlapygin.com/en/blog/sdd-first-experience/https://alexanderlapygin.com/en/blog/sdd-first-experience/My 2023 TDD experiment with ChatGPT: contract tests as living specifications. The insight that seeded Spec-Driven Development.Wed, 15 Oct 2025 00:00:00 GMThttps://alexanderlapygin.com/en/blog/sdd-backstory/https://alexanderlapygin.com/en/blog/sdd-backstory/Vibe Coding tools like Lovable and Replit are great for MVPs, but can LLMs sustain long-lived projects? The backstory of SDD's emergence.Tue, 14 Oct 2025 00:00:00 GMThttps://alexanderlapygin.com/en/blog/sdd-intro/https://alexanderlapygin.com/en/blog/sdd-intro/SDD is a paradigm where LLMs handle routine coding from specifications. Intro to a series on early Spec-Driven Development experience.Mon, 13 Oct 2025 00:00:00 GMT