Overview
FocusReactive is a headless CMS agency specialising in high-performance websites and Next.js development, composable content systems, and CMS migrations. As an official partner of Sanity, Storyblok, Contentful, and Payload CMS, we build vendor-agnostic architectures across the modern Jamstack ecosystem — Next.js, Gatsby, Nuxt, Qwik, and Astro. Performance and AI SEO aren't services we bolt on — they're built into every project through Core Web Vitals optimisation, render strategy, and structured data from day one. Headquartered in London with an office in Warsaw, FocusReactive works with clients across the UK, Europe, and beyond who have outgrown their current stack and need a migration or new build done without SEO loss, technical debt, or editorial disruption At the core of FocusReactive is an experienced engineering team that treats CMS migration as a software engineering project—not a content transfer exercise. The team works across Next.js, React, modern headless CMS platforms, APIs, databases, cloud infrastructure, and technical SEO, allowing migrations to be handled across the full technology stack rather than delegated between separate development, content, and SEO teams. FocusReactive helps organisations CMS migration without the usual trade-offs. The team move away from legacy or increasingly restrictive platforms such as WordPress, Webflow, Drupal, Contentful, Prismic, and other CMS architectures toward modern stacks built around platforms such as Sanity, Storyblok, Payload, and other headless CMS solutions. The agency remains platform-agnostic and selects the architecture according to the project's editorial, technical, localisation, integration, and operational requirements. A CMS migration affects far more than where content is stored. URL structures, metadata, redirects, structured data, internal linking, rendering behaviour, localisation, forms, integrations, analytics, and editorial workflows can all change at once. FocusReactive's engineers therefore approach migration as an end-to-end system transition. The team can handle the process from technical discovery and CMS architecture through content modelling, migration automation, frontend redevelopment, integrations, SEO preservation, testing, launch, and post-migration support. For large or complex migrations, this includes building automated pipelines rather than relying on manual content entry. Content can be extracted, transformed, validated, and imported into the new CMS while preserving relationships, metadata, localisation, and structured content. Where appropriate, the team develops scripts and migration tooling specifically for the source and destination platforms, making large-scale migrations more repeatable and auditable. FocusReactive also works on migrations involving large numbers of pages, multiple markets, multilingual content, complex content models, and legacy technical constraints. The engineering-led approach is particularly valuable when a company cannot afford prolonged editorial downtime or a loss of organic search visibility during the transition. SEO and performance are engineered into the migration Performance and AI SEO aren't services FocusReactive bolts on after development—they are built into the architecture from day one. Engineers consider rendering strategy, Core Web Vitals, caching, image delivery, JavaScript execution, metadata, canonicalisation, structured data, internal linking, and crawlability as part of the implementation itself. For Next.js projects, this can include selecting the appropriate combination of static generation, dynamic rendering, server-side rendering, caching, and revalidation rather than treating every page as the same type of request. The objective is to create a frontend that is fast for users while remaining accessible to search engines and increasingly important AI-driven discovery systems. During migration, the team also works to preserve existing search equity through URL mapping, redirects, canonical URLs, metadata migration, sitemap handling, structured data, and pre-launch validation. The emphasis is on maintaining search visibility while taking the opportunity to improve the underlying technical architecture. Engineering for editorial teams, not just developers A technically modern CMS still needs to work for the people publishing and maintaining the website. FocusReactive engineers therefore design content models around actual editorial workflows, including reusable components, structured content, localisation, relationships, validation, preview environments, and publishing workflows. The goal is to give marketing and content teams more control without forcing developers to become a bottleneck for routine publishing. This is particularly important for international organisations managing multiple markets and languages. A well-designed headless architecture can separate content from presentation while giving teams a structured foundation for localisation and reuse across markets and channels. FocusReactive does not treat migration as the end of the engagement. The same engineering team can continue to improve the resulting platform through Next.js development, CMS optimisation, technical SEO, performance engineering, integrations, AI capabilities, and ongoing maintenance. The agency's engineering-first approach is designed for organisations that have outgrown a conventional CMS setup and need more than a visual redesign. Whether the requirement is migrating a large content platform, consolidating multiple websites, rebuilding a marketing site on Next.js, or creating an AI-ready content architecture, FocusReactive combines CMS expertise, frontend engineering, infrastructure knowledge, and technical SEO within the same delivery team . The result is a website migration designed not simply to move existing content into a new CMS, but to create a faster, more maintainable, search-friendly web platform that can support the organisation's next stage of growth.
