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Jamstack Agency
Jamstack agency for B2B SaaS
This page covers Jamstack development agency services for B2B SaaS Series A-C, Fintech, DevTools, Professional Services, Media + Adtech, and headless e-commerce teams: Next.js application code, Astro content sites, Gatsby migrations, headless CMS agency engagement on Sanity / Contentful / Strapi, Vercel and Netlify deployment, Core Web Vitals tuning. It is a narrower scope than our sibling service. Our B2B website development page covers CMS-agnostic web builds that include WordPress as a first-class option for clients with a marketing team that needs Gutenberg or Elementor authoring. This page is the Jamstack-only side of the same agency — a next.js development agency that ships Next.js, Astro, and Gatsby on Vercel or Netlify with a headless CMS at the edge rather than a monolithic WordPress runtime.
What a Jamstack development agency delivers
Three things matter on a Jamstack engagement. First, the architecture decision is concrete: SSG via a static site generator for stable marketing pages, ISR for content that updates on a webhook, SSR for personalized dashboards, edge functions for auth and AB tests. Senior engineering teams want a Jamstack agency that can tell which rendering mode each route needs, not pick one framework and force every page through it. Second, the headless CMS integration is named code rather than a plugin: Sanity Studio with custom schemas, Contentful content models with locale-aware ISR revalidation, Strapi self-hosted with role-based publishing.
Core Web Vitals and performance SLA
Third, performance work is measured on Lighthouse and Core Web Vitals before launch, with a 90-day post-launch SLA that holds LCP under 2.5s and CLS under 0.1 across mobile and desktop. Pipeline-First Jamstack Development means we ship a measurable engineering deliverable on every sprint, not a vague performance promise.
- 5 to 10 marketing pages
- Next.js or Astro static build
- Single headless CMS (Sanity / Contentful / Strapi)
- Vercel or Netlify deploy + preview environments
- Lighthouse 90+ verified before launch
- OpenGraph automation, RSS, sitemap
- 90-day post-launch SLA
- 15 to 25 pages including dashboards
- Next.js App Router (server + client + edge)
- Authentication via Clerk or Auth0
- Stripe billing integration
- Headless CMS with locale-aware ISR
- Edge functions for personalization
- Core Web Vitals tuning + 90-day SLA
- Multi-locale, multi-region architecture
- Next.js + Sanity / Contentful at scale
- Algolia search + GraphQL federation
- Edge runtime + image optimization pipeline
- SOC2-ready logging + audit trail
- 6-month engagement
- Senior engineering team integration
Jamstack development is the right pick when developer velocity, edge performance, and a small security surface are weekly priorities. Marketing pages render as static HTML at the CDN with sub-second LCP globally. Content updates flow through a headless CMS via webhook ISR without a full rebuild. Authentication and personalization run as edge functions, never as a monolithic PHP runtime. Hosting cost on Vercel or Netlify scales linearly with traffic rather than with active database connections.
Traditional WordPress still wins for a different set of cases. Marketing teams with non-technical authors who need Gutenberg or Elementor block authoring inside a familiar admin surface. Mature plugin ecosystems for membership, LMS, or specific e-commerce stacks where WooCommerce plus a handful of plugins covers ground that headless commerce would take 12 weeks to rebuild. Existing teams with a multi-year WordPress codebase where the migration cost dominates the performance gain. If you are evaluating both, see our B2B website development page — it covers CMS-agnostic web builds that include WordPress as a first-class option. AI search visibility applies to both architectures — see our LLM SEO programme for how AI-search citations compound regardless of whether the underlying stack is Jamstack or WordPress.
Pipeline-First Jamstack Development picks the architecture that fits the engineering team and the content cadence, not the architecture that wins a benchmark slide. We do not migrate WordPress sites to Jamstack on principle. We migrate when the performance, security, or hosting-cost math is concretely positive and the editorial team is ready to work in a headless CMS rather than wp-admin.
Frequently asked questions
Jamstack is an architecture where the frontend (HTML, JS, CSS) is pre-built or rendered on the edge, separated from the backend. The result: pages load in 200-500ms instead of 2-4 seconds, security surface is minimal (no DB on every request), and you can deploy globally on CDN. Compared to WordPress, you trade some content-editor convenience for big speed and security wins. Best for high-traffic marketing sites, B2B SaaS landings, ecommerce storefronts.
Next.js (most common for marketing sites and SaaS), Astro (best Lighthouse scores out of the box), Nuxt (for Vue teams) and Gatsby (for content-heavy sites). We pick based on your team's existing stack, content velocity needs, and hosting preferences.
We pair Jamstack frontends with a headless CMS — Sanity, Strapi, Contentful, or Storyblok. Your editors get a familiar visual editor (often better than WordPress), with live preview. Changes publish in seconds via webhook to the static build pipeline.
Opposite — Jamstack typically improves SEO. Pages are pre-rendered (server-side or build-time), so Google sees fully-formed HTML. Lighthouse scores 90-100 are normal, which directly boosts Core Web Vitals signals. We always add Schema.org markup, hreflang for multilingual sites, and sitemap automation.
Jamstack development is typically 20-40% higher upfront vs WordPress (€10K-€25K vs €5K-€15K for a comparable scope), but hosting is 80% cheaper (Vercel/Netlify CDN at €0-€20/mo vs €30-€200/mo for WordPress hosting), and ongoing maintenance is minimal. Total cost of ownership flips after year 1 for most sites.
Yes — this is a common project. We keep all your existing URLs, content, and SEO equity. We build the new Jamstack frontend, pull content from your old WordPress (or migrate to a headless CMS), then switch DNS with zero downtime. Typical migration: 4-8 weeks for a 50-200 page site.