The verdict in three sentences
If your Miami WordPress site shows an LCP above 4 s and plugins keep piling up, migrating to headless Next.js is the most profitable performance lever in 2026. Expect EUR 10,000 to 25,000 and 6 to 10 weeks to cut load time by 2 to 3x and recover +8 to +20% conversion. The SEO risk is controlled with a 301 redirect plan and a URL freeze.
What the migration costs and returns
The budget depends on page volume, integrations (CRM, forms, e-commerce) and the chosen headless CMS. Here are the 2026 orders of magnitude for a Miami B2B site.
| Item | Current WordPress | Headless Next.js |
|---|---|---|
| Project cost | already in place | EUR 10,000 - 25,000 |
| Migration timeline | - | 6 - 10 weeks |
| Typical mobile LCP | 4.0 - 6.5 s | 1.2 - 2.2 s |
| Hosting/year | EUR 300 - 1,200 | EUR 240 - 1,400 (Vercel/AWS) |
| Plugin attack surface | high | near zero |
| Maintenance cost/year | EUR 1,500 - 3,000 | EUR 800 - 1,800 |
| Expected conversion | baseline | +8 to +20% |
The gain isn't only technical: a faster site improves bounce rate, mobile SEO and cost per lead on your Google Ads campaigns.
Architecture and hosting: Vercel or AWS?
In headless, WordPress can stay as the content back office (via its REST API or WPGraphQL) while Next.js handles rendering. The hosting choice depends on your traffic and data constraints.
| Option | Indicative monthly cost | Best for |
|---|---|---|
| Vercel Pro | EUR 20 - 120/month | Time-to-market, previews, edge |
| AWS Amplify | EUR 15 - 100/month | Data hosted in a chosen region |
| Cloudflare Pages | EUR 15 - 80/month | Global edge, strict compliance |
| Netlify | EUR 19 - 99/month | Simple JAMstack sites |
For a Miami SME sensitive to data location and compliance, AWS or Cloudflare reassure IT teams. Vercel remains unbeatable on deployment speed and per-branch previews.
Mini case study
Sophie, digital lead at a distribution SME in Miami, migrates a 40-page WordPress site generating 12,000 visits/month and 60 leads. With LCP down from 5.3 s to 1.8 s, conversion rises from 0.50% to 0.60% (+20%), i.e. 12 extra leads/month. At an average margin of EUR 350 per qualified lead, the annual gain reaches 12 x 12 x 350 = EUR 50,400. The EUR 16,000 migration pays for itself in under 4 months.
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FAQ
How much does a WordPress to Next.js migration cost in 2026?
Expect EUR 10,000 to 25,000 depending on page count and integrations. A simple brochure site sits at the low end; a site with e-commerce or a client portal at the high end.
How long does the migration take?
Between 6 and 10 weeks: audit, content review, front-end build, redirect plan and a controlled cutover.
Will I lose my SEO rankings?
No, provided you freeze URLs, set up 301 redirects and validate the crawl before cutover. We monitor rankings for 8 to 12 weeks after launch.
Can we keep WordPress as the back office?
Yes. In headless, editors keep using WordPress while Next.js handles fast rendering on the visitor side.
Is the conversion gain real?
Moving LCP from 5 s to under 2 s typically generates +8 to +20% conversion, especially on mobile where visitor patience is low.
Let's scope your project. Share your page count, integrations (CRM, forms, e-commerce) and monthly traffic: we'll price the migration and the ROI. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
