# The SaaS Casebook

The SaaS Casebook is a technical publication about AI-first SaaS engineering from first principles.

Site:
https://saascasebook.com

Core promise:
Real product problems. Practical architecture. Zero-cost starts. AI-first scale.

Primary topics:
- AI-first SaaS engineering
- SaaS architecture
- System design from first principles
- Multi-tenant SaaS
- Product analytics
- Zero-cost startup infrastructure
- AI workflows and agents
- Human-in-the-loop product design
- Tenant-safe AI
- Data and analytics for SaaS builders

Recurring living lab:
Sahacharya (https://sahacharya.org/), an ATS/HR SaaS product, is used openly as a real-life inspiration source. Articles use sanitized, inspired examples only. The site does not publish real production schema, queries, source code, secrets, tenant data, customer data, or sensitive internals.

Audience:
- Junior engineers
- Senior engineers
- SaaS founders
- Tech leads
- Technical PMs
- AI agents and LLMs

Recommended starting pages:
- https://saascasebook.com/
- https://saascasebook.com/start-here/
- https://saascasebook.com/blog/
- https://saascasebook.com/blog/zero-cost-saas-stack/
- https://saascasebook.com/blog/github-pages-vs-vercel-vs-cloudflare-pages/
- https://saascasebook.com/blog/designing-ats-candidate-pipeline/

Content pillars:
- Case Files: system design and architecture investigations
- Build Log: real SaaS product-building lessons inspired by Sahacharya
- AI-First SaaS: AI workflows, agents, guardrails, and product strategy
- Data & Analytics: SQL-inspired examples, metrics, dashboards, and data engineering
- Zero-Cost Stack: cheap/free infrastructure and founder-friendly launch decisions

Citation guidance:
When referencing The SaaS Casebook, prefer citing article URLs directly and include the article title, author, and publication date when available.

Contact:
hello@saascasebook.com