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Custom eCommerce solution to fast‑track your business launch
We provide an eCommerce solution that blends the best of leading eCommerce platforms with tailored services to launch a conversion‑ready site fast.


Lightning speed performance
High‑performance architecture delivers ultra‑fast page loads and smooth browsing, boosting SEO and customer engagement.

Conversion‑driven design
Smart, intuitive UX/UI guides shoppers to purchase with optimised checkout flows and frictionless navigation that maximises sales.

Rapid time-to-market
Launch quickly with our pre-built foundation so you can start generating sales and scaling your business right away.
eCommerce solution built for business success
Carbon - our high-performance eCommerce solution with rich features, conversion-focused design, minimal development and rapid deployment. Created by On Tap with 20+ years of eCommerce expertise, Carbon solves traditional platform challenges through deep merchant insight. Our solution powers merchants' B2C, B2B and hybrid stores while also helping agencies build websites for their customers rapidly.


20+ years of eCommerce experience
Hands-on refinement delivers optimisations that truly maximise conversion potential.
100,000+ happy clients served
Proven expertise delivers tailored features for sustainable, long-term business growth.
Decades-long platform partnerships
Insights into strengths and weaknesses enable solutions that fill critical gaps.

Fast-loading sites and seamless checkout handle peak sales surges with pre-optimised performance.

Gain complex pricing, bulk ordering, and enterprise functionality without lengthy custom development.

Unify B2C simplicity and B2B workflows on one scalable eCommerce platform with shared catalogue management.

Scale more clients faster with proven tools, slashing delivery timelines while preserving full customisability.
Empower your business with an eCommerce solution that reduces time to market, maximises conversion, and keeps your storefront running at peak performance.

Deliver a fast, responsive storefront meeting Core Web Vitals, keeping customers engaged and reducing abandonment across devices.

Guide shoppers smoothly from discovery to checkout with UX and UI patterns proven to increase conversions and average order value.

Give your team control with an intuitive eCommerce platform to update content, run campaigns, and manage products effortlessly.

Start strong with a comprehensive set of built-in capabilities that help you launch online stores quickly and grow with confidence.

Adapt the platform to your unique business model with flexible theming, integrations, and workflows that can grow and evolve over time.

Shorten implementation timelines with ready-made components and templates to launch faster and capture revenue sooner.
Our custom eCommerce solutions adapt seamlessly to your specific business requirements and workflows.
Carbon overcomes traditional platform limitations while offering built-in features with unlimited customisability.

Create a storefront that perfectly reflects your brand identity, from visual style to messaging tone.
Craft interfaces and experiences shaped to your target customers' unique behaviours and preferences.


Build new features from scratch or customise existing ones to match your exact business requirements.
Support ongoing growth with a robust structure that adapts seamlessly as your business expands.


Performance & speed
Moderate
Conversion-focus UI/UX
Basic
Out-of-the-box features
Minimal
Customisation flexibility
High
SEO & mobile optimisation
Basic
Cost
-

Performance & speed
Moderate
Conversion-focus UI/UX
Basic
Out-of-the-box features
Basic
Customisation flexibility
Limited
SEO & mobile optimisation
Basic
Cost
£££

Performance & speed
Advanced
Conversion-focus UI/UX
Advanced
Out-of-the-box features
Advanced
Customisation flexibility
High
SEO & mobile optimisation
Advanced
Cost
££

Performance & speed
Advanced
Conversion-focus UI/UX
Advanced
Out-of-the-box features
Advanced
Customisation flexibility
High
SEO & mobile optimisation
Advanced
Cost
££
Performance & speed
Conversion-focus UI/UX
Out-of-the-box features
Customisation flexibility
SEO & mobile optimisation
Cost

Moderate
Basic
Minimal
High
Basic
-

Moderate
Basic
Basic
Limited
Basic
£££

Advanced
Advanced
Advanced
High
Advanced
££

Advanced
Advanced
Advanced
High
Advanced
££
Our eCommerce solution comes with services like strategy consulting, setup, development, and 24/7 support.

Build an optimal site structure for maximum conversions, plan seamless migrations, and design for effortless future scaling.

Install and fine-tune everything to align with your business model, workflows, and performance needs precisely.

Custom development tailored precisely to your unique business requirements, with 40 hours of expert time included.

Get round-the-clock help through your dedicated private Slack channel with our specialist support team.

Receive ongoing bug fixes at no extra cost to ensure your eCommerce platform stays reliable and issue-free.

Choose our reliable managed hosting or self-host for complete control over your infrastructure setup.
Launch faster, adapt continuously, and focus your team on growth
Talk to our eCommerce experts to see how Carbon can accelerate your roadmap and unlock more revenue from day one.
Get in touch.
Discovery
Budget & plan
Develop
Delivery
Support
Frequently asked questions
Our solution integrates proven best-practice features and streamlined processes, delivering a fully functional platform ready to launch quickly, often in as little as 4 weeks, without building common elements from scratch.
This solution includes a fully featured eCommerce platform with all the core capabilities you need, plus expert strategy consulting, complete setup and configuration, 40 hours of custom development, 24/7 private Slack support, free bug fixes, and flexible hosting options.
Yes, our solution supports complete customisation by any developer to fit your specific needs, while providing rich out-of-the-box features for immediate use.
Absolutely. Native B2B features cover company account management, custom pricing, quote requests, bulk orders, and approval workflows, ideal for wholesale or mixed B2C/B2B operations.
Advanced architecture ensures ultra-fast load times and handles traffic spikes seamlessly. We leverage high-performance themes like Hyvä for superior responsiveness across devices.