https://specdd.ai/how-to/adopt-specdd-on-existing-projects/Spec-driven development adoption guides for existing repositories: plan rollout, map codebases, spec legacy modules, migrate architecture docs, run pilots, and measure impact.Hugoen-ushttps://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-plan-a-specdd-adoption-for-an-existing-repo/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-plan-a-specdd-adoption-for-an-existing-repo/Plan spec-driven development adoption for an existing repository by choosing one high-value area, drafting reviewed specs, running one small change, and expanding gradually.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-introduce-specdd-to-a-skeptical-team/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-introduce-specdd-to-a-skeptical-team/Introduce spec-driven development to a skeptical team by addressing documentation, process, tests, tickets, and agent-context concerns with a small pilot and concrete evidence.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-introduce-specdd-without-slowing-delivery/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-introduce-specdd-without-slowing-delivery/Introduce spec-driven development without slowing delivery by adding specs only around active work, keeping drafts small, reviewing quickly, and measuring practical signals.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-run-a-specdd-pilot/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-run-a-specdd-pilot/Run a spec-driven development pilot with one team, one repository, one active area, clear success criteria, lightweight review, and a decision about whether to expand.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-map-an-existing-codebase-into-specs/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-map-an-existing-codebase-into-specs/Map an existing codebase into SpecDD specs for spec-driven development by surveying roots, modules, ownership boundaries, active work, existing docs, and local behavior before writing .sdd files.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-generate-draft-specs-from-existing-code/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-generate-draft-specs-from-existing-code/Generate draft SpecDD specs for spec-driven development from existing code safely by limiting scope, separating observed behavior from intent, reviewing assumptions, and approving before implementation.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-spec-a-legacy-module-safely/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-spec-a-legacy-module-safely/Spec a legacy module safely with spec-driven development by separating intended behavior from accidental behavior, marking assumptions, narrowing authority, and changing one slice at a time.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-adopt-specdd-one-folder-at-a-time/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-adopt-specdd-one-folder-at-a-time/Adopt spec-driven development one folder at a time by starting with a root spec, adding folder-level context for active areas, and expanding local specs only as work reaches them.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-migrate-from-architecture-md-or-a-big-requirements-doc-to-local-specs/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-migrate-from-architecture-md-or-a-big-requirements-doc-to-local-specs/Migrate from ARCHITECTURE.md or big requirements documents to local SpecDD specs for spec-driven development by extracting durable rules, mapping them to owners, and leaving rationale in docs.https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-measure-whether-specdd-is-helping/https://specdd.ai/how-to/adopt-specdd-on-existing-projects/how-to-measure-whether-specdd-is-helping/Measure whether spec-driven development is helping by tracking correction loops, wrong-file edits, review clarity, spec-code drift, onboarding, task completion, and verification quality.