Breaking into 12 international markets with technical SEO
How we helped a B2B SaaS platform achieve 520% international traffic growth through systematic technical optimisation and Core Web Vitals optimisation ("performance engineering").
Fragmented architecture and technical stagnation
The client operated a high-performing US-focused site, but global expansion was crippled by legacy technical debt. Their infrastructure was unable to scale beyond domestic borders.
- Lack of hreflang implementation causing massive keyword cannibalisation.
- Core Web Vitals failures across mobile LCP and CLS metrics.
- Heavy JavaScript bundles leading to crawling inefficiencies and index bloat.
Audit score
The 24-week expansion roadmap
Phase 1: International architecture
Implementation of a robust subdirectory structure. We mapped and deployed precise hreflang attributes for 3,400+ localised URLs to ensure correct regional serving.
Phase 2: Performance engineering (Core Web Vitals optimisation)
Complete resolution of Core Web Vitals issues through Server-Side Rendering (SSR) implementation and a 67% reduction in critical path JavaScript.
Phase 3: Content localisation
Move beyond direct translation. We used native SEO specialists to adapt content for cultural nuances, local search intent, and regional compliance.
Phase 4: Authority building
Localised digital PR campaigns and technical outreach, establishing relationships with key local tech publications in the DACH, LATAM, and APAC regions.
Technical execution layer
Core optimisations deployed
Hreflang mapping
Cross-region linking logic to ensure search engines serve the right version to the right user.
CWV improvements
Aggressive resource prioritisation to pass LCP and INP metrics globally.
JS optimisation
Tree-shaking and module splitting to reduce render-blocking execution by 67%.
CDN deployment
Edge-caching localised content for sub-200ms Time to First Byte.
SSR integration
Server-side rendering implementation to ensure 100% crawlable content.
Keyword research
Native intent mapping for 12 localised markets across 4 continents.
“SEO Engineers didn't just fix our tags; they re-engineered how our platform speaks to the world. Our international traffic surpassed our domestic baseline within 9 months.”
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