Big Commerce Launches Open Source B2B Buyer Portal to Boost eCommerce Customization

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Big Commerce Launches Open Source B2B Buyer Portal to Boost eCommerce Customization: Big Commerce, a leading SaaS eCommerce platform, has launched an open-source version of its B2B Buyer Portal, providing enterprise grade flexibility and control to manufacturers, wholesalers, and distributors.

Unveiled on May 7 this new release offers developers and agency partners full access to the portal’s source code. With it, businesses can design personalized, industry-specific buyer journeys faster and at reduced operational costs.

Customizable B2B Experiences at Scale

According to Big Commerce’s official statement, the open-source portal allows sellers to manage the full B2B buyer lifecycle from product discovery to purchase, post-sale service, and even warranty support all within a single, centralized platform.

By leveraging this customizable foundation, B2B brands can:

  • Accelerate development timelines

  • Cut back on eCommerce infrastructure expenses

  • Create tailored solutions that align with complex business workflows

This approach enables teams to build scalable eCommerce platforms while maintaining brand identity and customer experience integrity.

Catalyst: Composable Commerce Simplified

The release builds on the momentum of Catalyst, Big Commerce’s new composable storefront framework introduced in February. Designed for mid-market and enterprise-level B2C and B2B brands, Catalyst combines top-tier headless commerce technologies and Next.js capabilities.

“Catalyst delivers our reference composable architecture,” said Brent Bellm, CEO of BigCommerce. “It equips developers with high-performance tools and gives brand teams access to a powerful visual editor no or low code required.”

Digital Transformation in the SMB eCommerce Space

As more businesses embrace digital commerce, payment infrastructure and web design have become crucial. In a recent conversation with PYMNTS, Authorize.net VP Alex Burgin highlighted the pillars of successful eCommerce:

  • A simple, user-friendly website

  • Seamless checkout with multiple payment options

  • Strong digital presence and customer engagement

Whether it’s a roadside lemonade stand or a PC manufacturer, Burgin emphasized the universal need for a frictionless payment system and a clean online experience.

Big Commerce Launches Open Source B2B Buyer Portal

The Future of Seamless eCommerce

Today’s consumers expect quick, secure, and connected shopping experiences. As noted by PYMNTS’ Karen Webster, apps and devices now allow shoppers to place orders in minutes—saving hours compared to traditional retail shopping.

Big Commerce’s ongoing innovations in open-source tools and composable commerce are helping businesses stay ahead in a fast-evolving digital economy.

Final Thoughts

By offering its B2B Buyer Portal as open source, BigCommerce is reshaping the way enterprise brands build eCommerce solutions. With greater flexibility, cost control, and speed to market, the platform strengthens its position as a top choice for B2B digital transformation.

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