Building an e-commerce platform is more than "making a website". It's designing a sales system that has to run 24/7, hold traffic, integrate with the ERP and grow with the business. This article walks through 8 areas that concretely determine whether a store will succeed or not.
1. Understanding goals and target audience
Every technical decision follows a business one. Questions you have to answer:
- Who are your customers? B2C, B2B, mix?
- How many SKUs do you sell: 50, 5,000 or 50,000?
- Are you selling in one country or several?
- Do you have physical locations for click-and-collect?
- What are realistic success metrics: number of orders, average basket, retention?
Without these answers, picking a platform and architecture is guesswork.
2. Choosing the right technology platform
The market splits cleanly:
- Shopify: fastest time-to-market, lowest custom potential, highest monthly fees at enterprise scale
- WooCommerce: flexible, cheap to start, but technical debt grows with scale
- Shopware 6: sweet spot for medium and large B2B/B2C projects
- Sylius: when business logic doesn't fit any existing platform
- Custom (Next.js + headless CMS): maximum flexibility, highest upfront cost
There is no "best" platform. There's the best for your specific context.
3. Design and user experience (UX)
UX is the main lever of conversion. The statistic that holds: the difference between an average and an excellently designed checkout can be a 2× conversion rate.
What actually moves the needle:
- One-page checkout with the minimum number of fields
- Guest checkout option (not everyone wants to create an account)
- Visible total (no "surprise" fees at the end)
- Mobile-first design: over 65% of traffic is mobile today
- Fast search with autocomplete for stores with 500+ products
4. Security and data protection
An e-commerce platform holds other people's money and personal data. Which means:
- SSL as standard (Let's Encrypt is free)
- PCI DSS compliance (easiest via a payment provider like Stripe)
- GDPR: consent banner, audit log, right-to-erasure
- WAF (Web Application Firewall) for brute force and bot protection
- Backup strategy with regular restore tests
5. SEO optimization
Steps you don't skip:
- Technical SEO: clean URLs, sitemap.xml, robots.txt, schema markup for products and search
- On-page SEO: title/meta by template + manual override for top products
- Internal linking between products, categories and blog content
- Page speed: Core Web Vitals directly affect ranking
Without technical SEO, the best content marketing only builds on shaky ground.
6. Mobile accessibility
Five years ago mobile was "important", today it's primary. What actually gets checked:
- Touch targets ≥ 48px
- Forms without horizontal scroll
- Image lazy loading
- Tap-to-call and tap-to-map for physical locations
- Apple Pay / Google Pay integration in checkout
7. Analytics and performance tracking
Without analytics, no optimization. Minimum setup:
- GA4 with enhanced ecommerce events
- Server-side tracking (Conversion API) for ad-blocker resilience
- Hotjar / Microsoft Clarity for session recordings and heatmaps
- CRM integration for the full customer journey
8. Continuous improvement
An e-commerce platform isn't "launch-and-forget". Monthly cadence:
- A/B tests (at least 1 hypothesis per month)
- Performance audit and optimization (LCP, INP, CLS)
- Stock and display audit (out-of-stock removed from categories)
- Plugin / security updates
- Conversion review by channel
Our approach
Our e-commerce practice combines platform selection, custom development, ERP integrations, UX optimization and continuous improvement. We don't do "launch and forget". We track the numbers and optimize every month.
Get in touch and we'll talk about your project.