Migration WordPress VIP vers Modern Stack

A full VIP migration runs $80,000-$400,000 depending on site complexity, number of pages, custom plugin count, and editorial workflow requirements. A 500-page corporate site with 10-15 custom plugins typically lands at $120,000-$180,000. A multi-site network with 50+ plugins, custom editorial workflows, and localization runs $250,000-$400,000. The investment pays back in 8-14 months through hosting savings alone. Your monthly TCO drops from $5,000-$30,000 on VIP to $500-$3,000 on Vercel Enterprise or Cloudflare Pages. Over a 3-year period, that's $162,000-$972,000 in reduced hosting costs, not counting the performance gains that lift conversion rates.

Most enterprise VIP migrations complete in 10-14 weeks. A 500-page site with standard editorial workflows ships in 10-12 weeks. Complex multi-site networks with custom Gutenberg blocks, advanced ACF configurations, and third-party integrations take 14-18 weeks. The critical path is usually content migration and editorial validation, not front-end development. We run a dual-stack deployment during cutover, so your existing VIP site stays live until the new stack is validated. Cutover itself takes under 4 hours with zero downtime. If your VIP contract renewal is approaching, we recommend starting the audit 16 weeks before your renewal date to avoid signing another 12-month term.

Your editors keep a familiar workflow regardless of which CMS path you choose. If your team is deeply embedded in Gutenberg, we run WordPress as a headless CMS. Editors see the same dashboard, same blocks, same publishing flow. The only visible difference is that preview loads in 1.2 seconds instead of 6. If your team is open to a new tool, Sanity Studio or Payload CMS offers real-time collaboration, structured content modeling, and a drag-and-drop editing experience. Most editorial teams reach full proficiency in Sanity or Payload within 3-4 hours of hands-on training. We provide recorded training sessions and a custom editor guide for every migration.

Your SEO rankings transfer intact when redirects and structured data migrate correctly, and that's exactly what we engineer for. Every URL maps one-to-one. Redirect chains flatten from multi-hop to single 301s. XML sitemaps regenerate automatically from your new CMS. Structured data, canonical tags, and Open Graph metadata carry over with full validation. We run a pre-cutover crawl comparison using Screaming Frog and Ahrefs against your existing site to flag any discrepancies. Post-cutover, we monitor Google Search Console daily for 30 days. Typical results show a 2-5 day indexing adjustment followed by ranking stability or improvement, driven by faster Core Web Vitals scores.

Yes. Running WordPress as a headless CMS on standard managed hosting (WP Engine, Kinsta, or even a $50/month Cloudways instance) while serving the front-end from Vercel or Cloudflare is a common migration path. Your editors keep Gutenberg. Your developers build in Next.js or Astro. Your hosting drops from $5,000-$30,000 per month to $500-$1,500. You lose VIP's managed support, but you gain full control over plugin updates, staging environments, and deployment pipelines. We configure automated backups, security hardening, and a CI/CD pipeline so your team deploys confidently without filing support tickets.

A VIP redesign from agencies like 10up, Human Made, or WebDevStudios typically costs $150,000-$500,000, and you still pay $5,000-$30,000 per month in VIP hosting afterward. Your Lighthouse mobile score might improve from 38 to 55 with optimization work, but PHP-rendered WordPress has a performance ceiling that modern frameworks bypass entirely. A post-VIP migration costs $80,000-$400,000, drops hosting to $500-$3,000 per month, and delivers Lighthouse mobile scores of 88-95. Over 3 years, the total cost of ownership difference is $160,000-$900,000 in your favor, with a faster site, happier developers, and no vendor lock-in.

Your old VIP site stays live throughout the entire migration process. We run a dual-stack deployment where both systems serve traffic simultaneously through edge routing rules. If the new stack shows elevated error rates, degraded Core Web Vitals, or any anomaly during cutover, we roll back traffic to VIP in under 90 seconds. No DNS propagation delays, no downtime. We've executed 30+ enterprise cutovers with this pattern and have never needed a full rollback, though partial rollbacks on specific URL patterns have happened twice. Both were resolved within 2 hours. Your SLA during cutover includes a dedicated engineer monitoring dashboards in real time for the full 72-hour stabilization window.

Post-migration hosting runs $500-$3,000 per month depending on your traffic volume and compute requirements. A site serving 2-5 million pageviews per month on Vercel Enterprise typically costs $800-$1,500. Cloudflare Pages with Workers is even lower at $500-$1,000 for equivalent traffic. Your headless CMS adds $0-$500 per month: WordPress headless on managed hosting is $50-$150, Sanity is $0-$499 depending on your plan, and Payload self-hosted runs on your existing infrastructure. Compare that to your current VIP bill. Most clients see 70-85% monthly savings. We also offer optional managed support at $2,500-$5,000 per month covering updates, monitoring, performance tuning, and a 4-hour response SLA for critical issues.