Spec-Driven Development is the hot new thing in vibe coding. Write a perfect spec, let the agent work, sit back. Sounds familiar? We called it Waterfall. We hated it. We sucked at it. Why do we think we're suddenly ready for it now?
As of when writing this post in the first days of April 2026, the vibe coding community is buzzing about "Spec-Driven Development." Write a perfect specification, let the AI agents loose, sit back, and watch the magic happen. Revolutionary, right? For me, it feels like a déjà vu from the 2000s. Back then, we called it Waterfall or V-Model. The idea was the same: define everything upfront, hand it over to the people who build it, and collect your finished product at the end.
