
Requirements Engineering Is Already Happening in Your Team
Your team already does requirements engineering - in refinements, three-amigos sessions, discovery conversations. The only difference between teams that get it right and teams that don't is whether they do it on purpose.

Three levels. One flat list. That's why refinement never ends.
Most teams use one level of requirements for everything - epics, stories, and scenarios all collapsed into the same text field. That's not a detail problem. It's a layering problem. Here's the model that makes the difference.

Spec-Driven Development: What It Is and Why AI Makes It Non-Negotiable
Spec-Driven Development isn't a new idea. What changed: AI makes the spec executable. It's no longer a document that guides humans - it's a command that drives agents.

Your acceptance criteria aren't missing. They're just lying.
Most teams don't have a missing acceptance criteria problem. They have a precision illusion problem - criteria that look done, pass refinement, and still leave every meaningful decision to whoever is building. Here's why that happens, where the line actually sits, and how to write criteria that close the right decisions without closing the wrong ones.

Gherkin basics: Given, When, Then is not a template - it's a thinking structure
Most developers encounter Gherkin in a test file and assume it's a test format. It isn't. Given, When, Then is a logic constraint - one that forces a separation of state, action, and observable result before anyone opens an IDE. The test is a side effect. The thinking is the point.
