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What Is a 3PL? A Plain-English Guide for D2C & B2B Brands
A 3PL (third-party logistics provider) is a company that handles warehousing, inventory management, and order fulfillment on behalf of another business — receiving inventory, storing it, and picking, packing and shipping orders as they come in, so the brand doesn't have to run its own warehouse.
What a 3PL Actually Does
- Receiving: accepting inbound inventory from manufacturers or suppliers
- Storage: warehousing product until it's ordered — sometimes with special requirements like climate control or lot tracking
- Pick & pack: pulling the right items for each order and packaging them for shipment
- Shipping: selecting carriers, generating labels, and getting orders out the door
- Returns processing: receiving and restocking (or disposing of) returned items
- Inventory reporting: giving the brand visibility into what's in stock and where
3PL vs. Fulfilling Orders In-House
Running fulfillment in-house means leasing warehouse space, hiring and training warehouse staff, buying a warehouse management system, and negotiating shipping rates directly with carriers — all before a single order ships. A 3PL absorbs that infrastructure and spreads the cost across many clients, which is usually cheaper and faster to launch than building an in-house operation, especially for a brand under a few thousand orders a month.
What to Look for in a 3PL
- Location: does it reduce your average shipping time and cost to customers?
- Specialization: does it understand your product category (e.g., climate-controlled storage for supplements or beauty)?
- Integration: does it connect directly to your ecommerce platform (Shopify, WooCommerce, etc.)?
- Accuracy: what's the provider's pick-and-pack accuracy rate?
- Scalability: can it handle order spikes without breaking the system?
Related Questions
Frequently asked questions3PL stands for third-party logistics — a company that manages warehousing, inventory and order fulfillment for another business.
In practice the terms are often used interchangeably. Technically, “fulfillment center” describes the physical warehouse function (pick, pack, ship), while “3PL” describes the broader logistics relationship, which can also include freight, inventory management and EDI.
Most brands consider a 3PL when in-house fulfillment starts limiting growth — commonly once order volume makes garage- or office-based shipping unmanageable, or when a brand needs capabilities (climate control, EDI, multi-channel integration) it can't build in-house.
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