What is a 3PL, and how does it work? A third-party logistics provider, or 3PL, manages inventory storage, order fulfillment, shipping, and other logistics services for businesses. When an order arrives, the 3PL picks, packs, and ships the products, helping brands meet customer demand without managing their own warehouse operations.
A third-party logistics provider, commonly called a 3PL, is a company that manages logistics activities on behalf of another business. Depending on the provider, those services may include receiving inventory, warehousing, inventory management, order fulfillment, picking and packing, shipping, returns, kitting, assembly, and transportation.
In simple terms, a 3PL stores your products and helps move them where they need to go. When a customer places an order, the order is sent to the 3PL. The 3PL picks the correct products, packs them according to your requirements, and ships them to the customer or retail destination.
For growing brands, working with a 3PL can reduce the time, labor, technology, and warehouse space required to manage logistics internally.
What Does 3PL Mean?
3PL stands for third-party logistics. The term refers to outsourcing part or all of a company’s logistics operations to an outside provider.
The three parties are typically:
- The business selling or distributing the product
- The customer, retailer, marketplace, or other recipient
- The logistics company managing inventory and moving the order between them
A 3PL does more than rent warehouse space. It becomes an operational partner responsible for executing specific parts of the supply chain, often using its own people, processes, facility, technology, and carrier relationships.
What Does a 3PL Company Do?
The exact services vary by provider, but a full-service 3PL may support the following areas.
Receiving
The 3PL receives incoming inventory from manufacturers, suppliers, or other facilities. The receiving team verifies quantities, checks the shipment against the provided documentation, records the inventory, and prepares it for storage.
Warehousing and inventory management
Products are stored within the 3PL’s warehouse until they are needed. A warehouse management system, or WMS, tracks inventory levels, locations, movement, and order status. This gives the business visibility into what is available and helps the warehouse maintain accurate inventory records.
Order fulfillment
When an order enters the system, warehouse employees or automated technology locate the required items, pick them, verify their accuracy, and pack them for shipment. This process is often called pick, pack, and ship.
A 3PL may fulfill several order types, including:
- Direct-to-consumer and ecommerce orders
- Business-to-business orders
- Wholesale and retail replenishment
- Subscription boxes
- Marketplace orders
- Large product rollouts
Shipping and transportation
The 3PL prepares orders for carrier pickup and coordinates delivery through parcel, less-than-truckload, full-truckload, or other transportation services. Some providers also help compare shipping options, manage documentation, and track shipments.
Returns processing
A 3PL can receive returned products, inspect their condition, document the return, restock eligible items, and follow the brand’s rules for products that cannot be resold.
Kitting, assembly, and value-added services
Many 3PLs provide services beyond standard fulfillment. These can include assembling subscription boxes, bundling multiple products into one SKU, preparing retail displays, labeling products, adding inserts, repackaging inventory, and preparing shipments for Amazon FBA.
How Does a 3PL Work?
Although every operation is different, the typical 3PL fulfillment process follows six steps:
- Systems are connected. The 3PL integrates its technology with the brand’s ecommerce platform, marketplace, enterprise resource planning system, or other sales channels.
- Inventory arrives. Products are delivered to the 3PL’s facility, verified, entered into the warehouse management system, and stored.
- An order is placed. A customer or retailer submits an order through a connected sales channel.
- The order reaches the warehouse. Order information flows to the 3PL, where it is released for fulfillment.
- The order is picked, packed, and shipped. The warehouse team locates the products, verifies the order, packages it, and prepares it for the appropriate carrier.
- Tracking and inventory are updated. Shipment information is sent back to the selling channel, and inventory levels are updated as products move through the operation.
This connected process helps reduce manual data entry and keeps order, inventory, and shipment information aligned.
What Is the Difference Between a 3PL and a Warehouse?
A warehouse primarily provides space to store inventory. A 3PL combines storage with logistics services and operational support.
For example, a traditional warehouse may hold pallets until a business arranges for them to be moved. A 3PL can receive those pallets, track the inventory, pick individual units, package orders, coordinate shipping, process returns, and report on activity.
If a business only needs additional storage, a warehouse may be enough. If it needs inventory to move through a complete fulfillment process, a 3PL is usually the more appropriate solution.
3PL vs. In-House Fulfillment
With in-house fulfillment, a business manages its own facility, employees, equipment, software, inventory processes, packaging, carrier coordination, and daily order execution. This model gives the business direct control, but it also requires significant time and investment.
With a 3PL, the business outsources some or all of those responsibilities. The right approach depends on order volume, product requirements, internal expertise, available space, growth plans, and the level of control the business wants to retain.
A 3PL can be especially valuable when fulfillment demands are growing faster than the company’s internal operation can support.
What Are the Benefits of Using a 3PL?
More time for core business priorities
Outsourcing logistics allows internal teams to spend less time managing warehouse labor, packing orders, troubleshooting shipments, and tracking inventory manually. That time can be redirected toward product development, sales, marketing, and customer growth.
Scalable space and labor
Order volume rarely stays perfectly consistent. A 3PL can provide warehouse capacity and trained labor to support normal demand, seasonal peaks, promotions, retail launches, and long-term growth.
Access to logistics technology
Many 3PLs provide a warehouse management system, inventory reporting, order visibility, barcode scanning, ecommerce integrations, and other tools that would require a substantial investment to build internally.
Broader fulfillment capabilities
A qualified 3PL may support multiple sales channels and order types from one operation, including ecommerce, retail, wholesale, subscription, and marketplace fulfillment.
Operational expertise
Experienced logistics teams understand receiving, inventory control, packaging, carrier requirements, retailer compliance, returns, and high-volume order processing. That expertise can help a growing business build more consistent processes.
A better path for growth
When fulfillment is designed to scale, an increase in sales does not have to create an equal increase in internal complexity. A capable 3PL gives the business the infrastructure to handle more volume without building an entire logistics operation from the ground up.
When Should a Business Use a 3PL?
There is no single order-volume threshold that applies to every company. However, it may be time to consider a 3PL if:
- Fulfillment is taking too much time away from growth-focused work
- Your current space is becoming too small or inefficient
- Order volume is difficult to manage during promotions or peak seasons
- Inventory accuracy or order accuracy is becoming harder to maintain
- You need to support both ecommerce and B2B or retail fulfillment
- Your business needs kitting, assembly, FBA prep, or other specialized services
- Your current shipping process is too manual
- You want better visibility into orders and inventory
- You are hiring warehouse employees faster than you can build reliable processes
- Your customers are experiencing preventable delays or errors
The best time to evaluate a 3PL is often before fulfillment becomes a barrier to growth.
How Do You Choose the Right 3PL?
Not every provider is designed for the same type of business. Before choosing a partner, ask how the 3PL handles:
- Your current order volume and expected growth
- Your mix of ecommerce, B2B, retail, and marketplace orders
- Receiving and inventory accuracy
- Seasonal peaks and unexpected volume increases
- Technology integrations and data visibility
- Kitting, assembly, labeling, and custom packaging
- Retailer routing guides and compliance requirements
- Returns and damaged products
- Service-level expectations and performance reporting
- Account management, communication, and issue resolution
- Pricing, minimums, contract terms, and additional fees
The lowest initial price does not always produce the lowest total cost. Errors, delays, inflexible processes, poor communication, and limited visibility can create costs that are harder to see in a rate sheet.
Look for a provider whose capabilities and operating model match both your current needs and the business you are building.
Is KSP Fulfillment the Right 3PL for Your Business?
KSP Fulfillment helps growing brands simplify logistics through technology-enabled, relationship-driven support. From our centrally located Minnesota facility, we provide ecommerce, B2B, wholesale, subscription box, and marketplace fulfillment for businesses across the United States.
Our capabilities include receiving and storage, inventory management, pick and pack fulfillment, kitting and assembly, shipping, returns processing, FBA prep, and integrations with more than 100 selling channels, carriers, and trading partners. Clients also receive direct support from people who take the time to understand their products, priorities, and growth plans.
If fulfillment is taking time away from your team or limiting your ability to grow, we would be happy to learn more about your operation.
Contact KSP Fulfillment to discuss your needs, request more information, or schedule a facility tour.
Frequently Asked Questions
What is a 3PL in simple terms?
A 3PL is a company that stores inventory and manages logistics services for another business. It may receive products, track inventory, fulfill orders, pack shipments, coordinate transportation, and process returns.
What does 3PL stand for?
3PL stands for third-party logistics.
Is a 3PL the same as a fulfillment center?
The terms are sometimes used interchangeably, but they are not always identical. A fulfillment center focuses on processing and shipping orders. A 3PL may offer fulfillment while also providing broader services such as inventory management, transportation, kitting, assembly, returns, and supply chain support.
Can a 3PL handle both B2B and ecommerce orders?
Some 3PLs can support both. Ecommerce fulfillment often involves individual orders shipped directly to consumers, while B2B fulfillment may include cases, pallets, retailer routing requirements, scheduled deliveries, and EDI transactions. Confirm that a potential provider has experience with your specific order mix.
Can a small business use a 3PL?
Yes. A small or growing business can use a 3PL if outsourcing fulfillment provides more value than continuing to manage it internally. The right time depends on order volume, operational complexity, margins, growth plans, and each provider’s minimum requirements.