Editorial update (August 2026): The former 3dcart example, hardcoded platform count, guaranteed-outcome language, and legacy credential wording were updated.
eCommerce is a fast-growing space where new B2B solutions that automate online retail routines appear all the time. Inventory and order management software, accounting and repricing systems, mobile commerce tools, and data feed management platforms are all prime examples. Shipping systems are among them too, and it's no wonder, since shipping is one of the essential services for every online merchant. A shopping cart shipping integration lets shipping software connect directly to an eCommerce platform to pick, pack, and ship ordered products efficiently for the merchant's customers.
How to Entice New Clients to Your Shipping Solution?
Supporting the shopping platforms used by target merchants can expand a shipping software vendor's addressable market. It does not make every platform user a likely customer; commercial results still depend on product fit, geography, merchant segment, pricing, and distribution.
Challenging Dilemma
There are hundreds of eCommerce solutions on the market today, and B2B vendors need to decide which ones to connect and work with. Once they've chosen which carts to integrate with, they face a real challenge: each platform has its own API and its own way of exposing data, which makes retrieving information from shopping carts far from straightforward. For example, building a Shift4Shop shipping fulfillment integration requires understanding that platform's specific API structure, and the same is true for every other cart or marketplace on the list.
Building integration with even a single platform can require significant time and money, which not every vendor can afford. The shipping software vendor would need to find and hire an experienced developer who has already worked with that particular platform and can build a tested and maintainable integration module. Now imagine the effort required to connect with multiple shopping carts and maintain dozens of separate integrations at once.
Shortcut to Business Improvement
One option is a unified API that connects shipping and other B2B software with multiple shopping carts and marketplaces through a single integration point. API2Cart currently lists 70+ supported platforms; method and parameter coverage should be checked for each target platform.
Shipping software connects through authenticated API requests and can work with supported customer, order, product, tracking, shipment, and address data. API communication uses HTTPS, while store authentication varies by platform; see the current store authentication guide and protect API and store keys as secrets.
If you're interested in learning how our API can power your shipping software, contact us with a message or schedule a call with our representative.
