About Byggmax
Byggmax is one of the largest DIY retailers in the Nordics, operating more than 160 physical stores across Sweden, Norway, Finland, and Denmark. Its eCommerce channel supports large product catalogs, country-specific pricing and stock, service bookings, and content-driven experiences such as DIY guides and build planners.
Problem
For Byggmax, a legacy ecommerce setup spread across multiple countries had become unstable and risky to change, slowing releases and limiting growth.
As the business expanded across markets, the platform evolved into a mix of shared components, country-specific logic, and custom infrastructure. The stores were live and generating revenue, but the setup no longer behaved consistently under real traffic. Performance varied between countries, and even small changes carried a high risk of side effects elsewhere.
What had worked at lower volumes became harder to maintain as traffic, catalog size, and feature complexity increased. Teams grew cautious about releasing changes, especially close to campaigns or peak periods. Improvements to UX and performance were repeatedly delayed because stability work kept taking priority.
The issues showed up as:
- Storefront performance dropping under peak traffic
- Releases becoming high-risk due to shared components across countries
- Teams avoiding changes near campaigns to prevent outages
- UX and performance work competing with basic stability fixes
- Ongoing firefighting replacing planned roadmap delivery.
Solution
Gradual storefront modernization
The storefront was modernized in controlled steps using Hyvä, starting with shared layout elements and continuing through product listing and product detail pages. Checkout and core commerce logic were left unchanged. This reduced release risk while improving performance incrementally, allowing the business to keep trading safely throughout the transition.
Consistent customer experience across old and new storefronts
As parts of the storefront were updated, Core Magento and Hyvä operated side by side. Design rules and visual standards were kept consistent across both setups, supported by ongoing visual checks. Customers experienced a unified interface throughout the migration, regardless of which pages had already moved.
Performance improvements proven under live traffic
Performance and feature checks were embedded into delivery from the start. Pages were tested on staging before go-live and optimized further after launch, with decisions based on real traffic behavior rather than lab benchmarks. This ensured performance gains held up under peak demand.
Reliable product and stock data across all stores
The existing Inriver PIM integration was preserved and stabilized to ensure accurate product data, pricing, and stock per store. This avoided introducing new data risk during platform changes and ensured that performance and UX improvements did not come at the cost of operational accuracy.
Simplified infrastructure
The platform was moved from a custom AWS setup to ReadyMage while preserving existing integrations, data flows, and business logic. This removed infrastructure-related single points of failure and lowered operational risk without changing how internal teams worked day to day.
Outcome
- eCommerce stores for Sweden, Norway, and Finland launched on schedule.
- Frontend performance improved after the incremental Hyvä rollout:
- PLP PageSpeed increased from 85 to 99
- PDP PageSpeed increased from 70 to 87
- Page load times improved by approximately 30%.
- A unified user experience across 6 store views and 4 Magento stores.
- Improved platform stability, reducing release risk during campaigns and peak periods.
- Accurate stock and pricing delivered per store through Inriver PIM integration.
- 99.8 percent uptime supported by 24/7 monitoring and support.
- Platform stability gave Byggmax a reliable foundation for future expansion.
Dealing with a legacy setup that’s becoming a business risk? We help teams stabilize fragile commerce foundations and get platforms back into a state where growth is possible again. Book a 50-min ROI roadmap session with scandiweb.
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