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Overview

Both specs.md (AI-DLC) and BMAD-Method target complex systems and enterprise-scale development. The key difference is their approach to agent organization. BMAD-Method uses 19+ role-based agents that simulate a full development team (Analyst, PM, Architect, Developer, QA, etc.). specs.md (AI-DLC) uses 3 phase-based agents aligned to AI-DLC’s methodology (Inception, Construction, Operations).

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Side-by-Side Comparison

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When to Choose Each

Choose specs.md (AI-DLC) if:

  • You want a formal AWS methodology
  • You prefer fewer, phase-aligned agents
  • You want DDD as an integral part (not optional)
  • You value collocated Mob rituals
  • You want to avoid managing 19 agents
  • You want a VS Code extension to track progress visually

Choose BMAD if:

  • You want maximum agent customization
  • You prefer role-based agent simulation
  • You’re comfortable with higher complexity
  • You want 19+ specialized personas
  • You prefer async agent handoffs
  • You have time to invest in learning

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Key Differences

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1. Agent Organization

BMAD: Focuses on traditional Agile roles—19+ agents mimicking a full development team with familiar titles.
specs.md (AI-DLC): Focuses on AI development lifecycle phases with shorter iterations (Bolts, not sprints). 3 agents aligned to process phases.

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2. Methodology Foundation

BMAD: “Breakthrough Method for Agile AI-Driven Development” - an open source framework built on agile principles with AI agents replacing human roles. specs.md: AWS’s formally defined AI-DLC methodology with specific phases, rituals, and artifacts documented in a whitepaper.

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3. Design Technique Integration

BMAD: Design techniques are optional. Teams can choose their own approach. specs.md: DDD is integrated as core. AI applies domain-driven design principles during decomposition—it’s not optional.

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4. Rituals and Collaboration

BMAD: Agents hand off documents to each other asynchronously. specs.md: Mob Elaboration and Mob Construction are collocated rituals where teams work together with AI in real-time.

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Agent Mapping

If you’re familiar with BMAD agents, here’s how they map to AI-DLC:

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Complexity vs Control Trade-off

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Migration Path

If you’re currently using BMAD and want to try AI-DLC:
1

Map Your Agents

Understand how your 19 agents map to 3 AI-DLC phases
2

Adopt Mob Rituals

Replace async handoffs with collocated Mob Elaboration and Mob Construction
3

Integrate DDD

Move from optional design techniques to DDD as core
4

Use Phase-Based Thinking

Organize work by phase (Inception → Construction → Operations) rather than role

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Summary

Bottom Line: Both target complex systems. specs.md offers a formal methodology with 3 phase-based agents. BMAD offers maximum customization with 19+ role-based agents.Choose based on whether you prefer methodology-driven simplicity or agent-driven flexibility.