3PL Software: How to Evaluate Technology & Avoid Poor Systems
International 3PLs
The software your 3PL uses determines whether you have real-time visibility into inventory and orders or spend hours chasing down information. Good software automates fulfillment workflows, syncs data instantly, and provides actionable insights. Poor software requires manual workarounds, updates slowly, and creates operational headaches.
This guide explains what 3PL software actually does, how to evaluate systems during provider demos, and the red flags that indicate outdated technology that will slow down your business.
What Is 3PL Software?
3PL software refers to the technology platforms that manage warehousing, order fulfillment, and shipping operations. This includes the systems the 3PL uses internally to run their warehouses plus the dashboards and tools they provide to clients for visibility and control.
The software handles everything from receiving inventory at warehouses to routing orders to the right facility, generating pick lists for warehouse staff, printing shipping labels, and updating order status in real time. It connects your ecommerce platform to the 3PL's operations so orders flow automatically without manual intervention.
Quality 3PL software gives you visibility into what's happening with your inventory and orders without requiring you to call or email for updates. You should see real-time inventory levels, order status, shipping performance, and costs through a dashboard accessible anytime.
Poor 3PL software requires frequent manual uploads, provides delayed data updates, and lacks the reporting you need to make informed decisions about inventory purchasing and allocation.
Types of 3PL Software Explained
Understanding the different software components helps you evaluate what a 3PL actually offers.
Warehouse Management System (WMS)
A WMS runs the warehouse operations. It directs where inventory gets stored, generates pick lists telling staff which items to pull for each order, tracks inventory movement, and manages receiving processes when new shipments arrive.
The WMS is internal to the 3PL's operations. You don't typically use the WMS directly, but the quality of their WMS determines how accurately and efficiently they fulfill your orders. A 3PL running on spreadsheets or outdated WMS technology will have higher error rates, slower fulfillment, and less inventory accuracy than one with modern systems.
Transportation Management System (TMS)
A TMS manages carrier relationships, rate shopping, label generation, and tracking. It compares shipping costs across carriers for each package and selects the best option based on speed and price.
The TMS generates shipping labels, schedules carrier pickups, and tracks packages in transit. It pushes tracking information back to your store so customers can monitor their orders.
Order Management System (OMS)
An OMS coordinates orders across sales channels, routes them to the right warehouse, and tracks status through fulfillment and shipping. This is the system you typically interact with through the 3PL's client dashboard.
The OMS pulls orders from your ecommerce platform, marketplace, or wholesale system, determines which warehouse should fulfill each order based on inventory availability and customer location, and sends fulfillment instructions to the WMS.
How They Work Together
These systems integrate to create a seamless fulfillment workflow. When a customer places an order on your website, the software orchestrates the entire process from order placement to delivery without you doing anything.
Core Features Every 3PL Software Should Have
When evaluating 3PL software, verify these capabilities are included and work properly.
How to Evaluate 3PL Software
Evaluating software properly during the sales process prevents discovering limitations after you've committed.
Critical Questions for Every Demo
Features to Actually Test
Don't just watch a demo. Request access to a test account where you can try workflows yourself. Place a test order and verify it flows into the system correctly with all order details intact. After the test order, check that inventory decreased immediately. Real-time should mean within seconds, not minutes or hours.
Try creating reports yourself. Is it intuitive or do you need training? Can you export data for further analysis? Pull up the dashboard on your phone to verify mobile functionality works properly. Search for orders using different criteria to test how easy the search functionality actually is.
Data Sync and Integration Verification
Ask to see proof that their integration with your ecommerce platform syncs all necessary data. Order details including customer name, address, items, quantities, shipping method, and gift messages should transfer automatically. Tracking numbers, shipment confirmation, and inventory updates should push back to your store in real time.
Verify how errors get handled. What happens when an address is invalid or a product isn't in their system? Do you get notified immediately or discover problems later? Check that you can map your store's shipping methods to the 3PL's carrier services.
Integration Requirements
Understanding what should integrate and how deeply helps you evaluate 3PL software properly.
What Data Should Sync Between Systems
Native vs Custom Integrations
Native integrations are pre-built connections that update automatically. When Shopify releases a new API version, the 3PL updates their integration to maintain compatibility. Custom integrations require ongoing maintenance. When your ecommerce platform updates, the integration may break until someone fixes it.
Always prefer 3PLs with native integrations to your specific platform. Custom integrations should only be necessary for unusual platforms or very specific custom requirements. If you have custom needs or want to build additional automation, API access is necessary. Ask to see API documentation, example code, rate limits, and webhook support.
Red Flags: Signs of Poor 3PL Software
These indicators suggest the software will create problems rather than solve them.
Test these during demos. Place a test order and watch how quickly inventory decreases. Any delay beyond a few seconds indicates batch processing rather than real-time updates. If the 3PL says "we can handle that but you'll need to email us the details," the software lacks necessary functionality.
Cost and ROI Considerations
Understanding what you should pay for 3PL software and the value it delivers helps you make informed decisions.
