One template.
400 pages.

Every site is a Next.js 15 + React 19 + Tailwind v3 monorepo entry under sites/<domain>. The reference template is plombiersgeneve.ch — Swiss quality, real interactive map, 8–12 brand partner logos, phone-first CTA, trust badges, payment icons in footer. Black, white, neutral grays. No blue, no purple unless brand-specific.

One site is not one page. It is service × location × language. Geneva alone has 22 neighborhoods. 10 services × 22 zones × 2 languages (FR + RU) = 440 unique pages, each with its own H1, meta description, schema, internal linking and 1500 words of localized copy. AI writes them. Agents deploy them.

1. 01
   Define the service list

   10 verticals: emergency plumbing, leak repair, drain unblocking, boiler service, hot water, etc.
2. 02
   Define the city zones

   22 Geneva neighborhoods scraped from open street map.
3. 03
   Spin the cross-product

   service × city = the URL slug. Flat, no folders.
4. 04
   AI generates one page per cell

   Each page is contextual: name of the neighborhood, distance from city center, typical price, response time.
5. 05
   Agents write images

   Realistic-photo generator (Gemini) for service photos. Wikipedia images for landmarks. No stock library.
6. 06
   Sitemap built and submitted

   GSC API submits the sitemap.xml within an hour of deploy.

Geneva has a real Russian-speaking population, mostly Eastern European migrants and Russian expats. Nobody localizes for them. Every CTP site duplicates content under /ru/ with full Russian copy, same structure. That is +30% organic traffic most competitors leave on the table.

The cheapest +30% traffic in any local market is the language nobody else bothers with. In Bali it's Indonesian. In Geneva it's Russian. In Milan it's Romanian.

Every site has 8–12 brand partner logos in a strip near the top. Real logos, not text cards. Wikipedia for major brands, official brand sites for niche, seeklogo.com / freebiesupply.com / cdnlogo.com as fallback. Saved as PNG/SVG in public/images/brands/. Used with next/image + object-contain.

This element does more than it looks like. It is the cheapest trust signal that exists. Customers don't verify the partnership; they just see the logos and infer legitimacy.

One git push to main. Vercel auto-deploys. Cloudflare DNS already pointing. SSL by default. Sitemap submitted. Analytics wired (GA4 + Microsoft Clarity + GSC). Mailgun routes set for info@<domain>. Done.

The factory is the door at scale. Adding the 117th site is the same command as the 116th. That's the unit economic.