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CMS website development services build, customize, or migrate content-management systems for businesses. Three project shapes in 2026: build a new CMS-driven site (custom WordPress, headless WordPress, or modern headless CMS like Sanity or Payload), migrate from one CMS to another with full SEO transport, or harden an existing CMS site for performance and Core Web Vitals. The right shape depends on whether the editorial team needs retraining, whether plugin-dependent functionality can move headless, and what your traffic-shape budget tolerates.

Six honest answers. Classic WordPress for sub-100-page marketing sites with non-technical editorial teams. Headless WordPress when editors won't retrain but performance demands a modern front-end. Sanity for collaborative real-time editing and content-lake architectures. Payload for engineering teams that want a TypeScript CMS in their own repo. Storyblok for visual page-building without WordPress plugin bloat. Ghost for newsletter-led publications. Avoid Wix and Squarespace for any site where SEO is the primary acquisition channel.

Four price bands. Sub-100 page classic WordPress build: 8,000 to 25,000 USD. Headless WordPress rebuild: 25,000 to 90,000 USD. Modern headless CMS (Sanity, Payload, Storyblok) with custom design: 35,000 to 120,000 USD. Multi-page enterprise build with custom integrations, multi-locale, and 90-day monitoring: 75,000 to 250,000 USD. Discovery (1-2 paid weeks at 1,500-5,000 USD) precedes the fixed-price build on every engagement above 20,000 USD.

Six components beyond build-the-site. Custom content modeling with editorial-team sign-off. Multi-locale architecture if the brand publishes outside one country. Build-time schema markup emission per page type. Hreflang and sitemap discipline. Redirect map sourced from Search Console + Ahrefs + sitemap. 60-90 day post-launch monitoring with named owner for regressions. Most agencies that ship at 100,000 USD include three of the six; the bar is six.

Yes if the architecture is right. The Lighthouse and indexation difference is not CMS vs static, it is plugin-bloated front-end vs hand-written front-end. A headless CMS site (WordPress or Sanity backend, Next.js or Astro front-end) routinely clears Lighthouse 95+ where plugin-heavy WordPress struggles to clear 70. The deciding factor is whether the runtime carries the editor's plugin choices to the public site.

Yes if four rules hold. One, preserve every indexed URL or 301 it to its new home, sourced from Search Console, Ahrefs, and the WordPress sitemap. Two, bridge Yoast or Rank Math metadata field-by-field so title, description, canonical, and OG image stay byte-identical. Three, re-emit schema on every page from hand-written templates. Four, ship a build-time SEO linter that fails the deploy on any missing pre-migration URL. Done correctly, you see a 2-6 week dip then recover to or above baseline. Skip any of the four and you lose 30-60% of organic traffic permanently.

Four phases. Discovery 1-2 weeks regardless of size. Build 4 weeks (sub-100 pages), 6-10 weeks (mid-market 100-500 pages), 10-20 weeks (enterprise 2,000+ pages). Cutover 1-2 weeks. Post-launch monitoring 60-90 days. Sub-4-week timelines for sites over 100 pages skip discovery or skip SEO transport, both are how migrations fail.

Yes, this is the most common engagement shape in 2026. WordPress to Sanity, Payload, Storyblok, Contentful, or Ghost. Scripted content import preserves every post, page, ACF field, and image asset. Editorial UX gets a one-week retraining window. SEO transport handled as described above. Typical timeline 8-16 weeks; cost 25,000-90,000 USD depending on content volume and custom-field complexity.

Three rules from running 91,000 pages across 30 languages on Deluxe Astrology. Hreflang must be bidirectional with x-default; broken hreflang silently kills international SEO. content_group_id must be set on every EN row before translations import; without it, translation sets break. Sitemap streaming is mandatory above 10,000 URLs because monolithic sitemaps choke crawlers. Bonus rule: machine translation is acceptable for long-tail pages with a humanizer pass; flagship pages get human translators.

Audit first, fix second. Free 30-minute call to surface the top three issues, usually a combination of plugin bloat, broken schema, redirect chains, or image-pipeline failures. If the fix is under 8,000 USD I quote it as a hardening engagement (no migration). If the codebase is past the rebuild threshold, migration becomes the cheaper option and we scope that instead.