Notes on building.

Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.

All How to build Cost & planning Technology AI & strategy

How Much Does It Cost to Build a Webinar Platform Like Zoom?

Building a webinar platform means solving video encoding, real-time interaction, and recording at scale. Here is the real cost breakdown for each component.

Cost & planning · Mar 19, 2026 · 13 min read

Vertical AI Agents: Why Specialized Beats Horizontal LLMs in 2026

Harvey, Abridge, and Sierra prove the thesis. Vertical AI wins on retention, pricing power, and defensibility. Here's how to pick a vertical and actually beat GPT.

AI & strategy · Mar 18, 2026 · 14 min read

How to Build an AI Music Generation App Like Suno or Udio in 2026

Suno and Udio raised over $250M combined and unlocked a new media category. Here is the full build playbook for AI music generation apps in 2026.

How to build · Mar 18, 2026 · 14 min read

How to Build a Self-Storage Facility Management Platform in 2026

US self-storage is $39B with 60,000 facilities running on 2014-era software. Here is the full technical playbook for a modern cloud-native storage platform.

How to build · Mar 18, 2026 · 14 min read

How to Build an AI SEO and Content Optimization Tool in 2026

Surfer, Clearscope, and MarketMuse are getting disrupted by AI-native SEO tools. Here is the full technical playbook for building one in 2026.

How to build · Mar 18, 2026 · 14 min read

How to Build a Class Action and Mass Tort Legal Platform in 2026

Class action and mass tort is a $1B+ underserved legal tech vertical. Here is the full technical playbook for building software that law firms will pay a premium for.

How to build · Mar 18, 2026 · 14 min read

Tailwind CSS v4 vs v3: Migration Guide for SaaS Startups in 2026

Tailwind v4 landed with the Oxide engine, CSS-first configuration, and a full rewrite of the plugin model. Here is how to migrate without breaking your product.