SDD and waterfall both require comprehensive documentation before implementation. The key difference is that waterfall spans months/years, whereas SDD completes feature cycle in hours/days. Waterfall governs entire project lifecycles while SDD operate at individual feature level (toolkit like spec-kit actually creates a new feature branch as part of the specify step). An additional aspect is that waterfall is typically inflexible , backtracking is expensive, while SDD enables rapid iterations by adjusting specifications and regenerating / updating the code.
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Can someone please explain to me how Spec-Driven Development is not waterfall?
SDD and waterfall both require comprehensive documentation before implementation. The key difference is that waterfall spans months/years, whereas SDD completes feature cycle in hours/days. Waterfall governs entire project lifecycles while SDD operate at individual feature level (toolkit like spec-kit actually creates a new feature branch as part of the specify step). An additional aspect is that waterfall is typically inflexible , backtracking is expensive, while SDD enables rapid iterations by adjusting specifications and regenerating / updating the code.