How to integrate carriers with your CT system and who needs to pay what?
- Rob van Doesburg
- Jul 6
- 1 min read
Updated: Jul 7
As supply chains become more digital, the transport management systems (TMS) used by shippers/4PLs must support seamless collaboration with a wide range of forwarders and carriers. This requires high-quality, real-time data exchange across multiple steps in the transport lifecycle. But which integration options are available, what functionality do they offer, and—most importantly—who pays for what?
The Communication Challenge
Key touchpoints for shipper-carrier communication are:
🧾 Transport sourcing (request & receive proposals and spot quotes)
📦 Transport booking (book, confirm, share routing details)
🕒 Time slot booking (loading/unloading appointments)
🚚 Execution management (status updates, ETAs & issue handling)
🌍 Customs brokerage (documents & declarations)
💸 Finance (invoices, disputes & claims)
Available Integration Options
Different categories of solutions are available: TMS portals, direct EDI/API connections, generic communication networks, dedicated tools and platforms supporting a specific business function. We’ve summarised their coverage of the exchange of information in the table below.
Who Pays for What?
Understanding the cost structure of each solution helps clarify who carries the financial burden—shipper/4PL or forwarder/carrier (3PL/2PL).
Choosing the Right Solution
The right carrier integration setup depends on:
Scope/functionality needed
Your shipment volume and forwarder/carrier diversity
The (integration) architecture of your IT landscape
Your preference for control vs. flexibility
Willingness (and ability) of forwarders/carriers to co-invest
Consider a hybrid setup—e.g., EDI with core carriers, web portals for mid-size partners, and networks or platforms for long-tail carriers.
Want to Learn More?
Explore this knowledge platform for more best practices and vendor overviews, e.g.:
Or contact Rob van Doesburg (rob.van.doesburg@transportimprovement.com)
