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Business Model and Architecture Design methodology for aligning technical architecture with business model sustainability and scalability
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| name | BMAD Method |
| description | Business Model and Architecture Design methodology for aligning technical architecture with business model sustainability and scalability |
| version | 1.0.0 |
| category | business-architecture |
| triggers | ["bmad-method","bmad method","business model architecture","business architecture design","align architecture with business model"] |
| dependencies | {"required_mcps":[],"required_tools":[],"required_integrations":[]} |
The BMAD Method bridges business strategy and technical architecture. It ensures your technical decisions support long-term business sustainability, not just immediate feature delivery.
Core Insight: Your architecture IS your business model in code form.
Use BMAD when:
Understand the Revenue Engine:
Key Questions:
Map Business Model to Architecture:
Subscription SaaS (B2B):
Usage-Based (API/Platform):
Marketplace/Network:
Freemium/Consumer:
Infrastructure Cost Analysis:
Calculate Unit Economics:
Example (SaaS):
Target: $20/user/month subscription
Acceptable costs:
- Infrastructure: <$2/user/month (10% COGS)
- Support: <$4/user/month (20%)
- Sales/Marketing: <$60 CAC (3-month payback)
Architecture decisions:
- Shared infrastructure (not dedicated per customer)
- Self-service onboarding (reduce sales cost)
- In-app support tools (reduce support tickets)
- Efficient database design (reduce storage costs)
Design for Growth Stages:
Stage 1: MVP (0-100 users)
Stage 2: Growth (100-10k users)
Stage 3: Scale (10k-1M users)
Stage 4: Enterprise (1M+ users)
Evaluate Core vs. Context:
Build when:
Buy/Use SaaS when:
Examples:
| Capability | Decision | Rationale |
|---|---|---|
| Payment processing | Buy (Stripe) | Commodity, compliance heavy |
| Core algorithm | Build | Competitive moat |
| Email delivery | Buy (SendGrid) | Commodity infrastructure |
| Analytics | Buy (Mixpanel) | Faster than building |
| Custom AI model | Build | Unique to your data |
| Auth infrastructure | Buy (Auth0) initially | Build later at scale |
Capture Non-Negotiable Requirements:
Regulatory/Compliance:
Business Commitments:
Financial Constraints:
Business Model:
Architecture Decisions:
Build vs. Buy:
Outcome: $2.50/customer/month COGS, 83% margin
Business Model:
Architecture Decisions:
Build vs. Buy:
Outcome: $0.0025/call COGS, 75% margin
Business Model:
Architecture Decisions:
Build vs. Buy:
Outcome: Scales to 100k users at <$35k/month
Don't choose React/Node/AWS first. Choose after understanding:
Build for where you are now, but don't lock yourself out of next stage.
Bad: Hard-coded single-tenant that can't scale Good: Multi-tenant from day 1 (even at 10 users)
If you can't calculate cost per user, you can't predict profitability.
Track monthly:
If feature doesn't drive revenue/retention, defer expensive architecture.
Example: Don't build multi-region before proving PMF.
Know when you'll need to refactor:
Building for 1M users when you have 100 wastes time and money.
Antipattern: Microservices + Kubernetes at MVP stage Better: Monolith on Railway/Heroku, scale later
Not building multi-tenancy in B2B SaaS kills margins at scale.
Antipattern: Dedicated database per customer Better: Multi-tenant architecture from day 1
Not tracking cost per user means surprises at scale.
Antipattern: "We'll figure out costs later" Better: Model costs before building
Commodities don't need custom solutions.
Antipattern: Build custom auth, payments, email Better: Buy Stripe, Auth0, SendGrid; build differentiation
Spending on features that don't drive business value.
Antipattern: Perfect CI/CD before proving PMF Better: Ship fast, optimize later
When using BMAD Method, produce:
Business Model Canvas
Architecture Alignment Document
Build vs. Buy Decision Matrix
Architectural Roadmap
You've successfully applied BMAD when:
Remember: The best architecture is the one that makes your business model sustainable and profitable.
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