building-saaslisted
Install: claude install-skill LeadMagic/gtm-skills
# Building a SaaS
## Overview
Building a SaaS company is not the same as building a SaaS product. The product
is one component of a system that includes pricing, distribution, support,
compliance, and operations. This skill covers the complete build: from
architecture decisions at $0 to scaling infrastructure at $10M ARR.
## When to Use
- "How do I build a SaaS company?"
- "What tech stack should I use?"
- "Start a SaaS from scratch"
- "Scale our SaaS infrastructure"
- "What should I build first?"
- "SaaS architecture decisions"
- "Build vs buy for SaaS tools"
## Authoritative Foundations
- **David Skok (Matrix Partners)** — SaaS metrics and unit economics. LTV:CAC
ratios by stage, CAC payback benchmarks, Magic Number.
- **SaaStr (Jason Lemkin)** — ARR stages and hiring triggers. Founder must
personally close 10-20 deals before first sales hire.
- **Winning by Design GTM Index** — 1-10 scoring across 6 models to assess
revenue system maturity.
## Step-by-Step Process
### Phase 1: $0-10K MRR — Validation
**Product:**
- Ship the smallest thing that solves one real problem
- No microservices. Monolith or simple backend + frontend
- Host on one provider (Vercel + Supabase, or Railway, or Fly.io)
- Don't build auth, billing, or infrastructure yourself — use Stripe, Clerk, etc.
- Time to first user: days, not months
**Pricing:**
- Start with one plan. Add tiers when customers ask for them
- Price based on value, not cost. If they save $1,000/mo, $100/mo is cheap
- A