A 3PL stores your inventory and ships your orders for you. But the term spans four very different operating models — and most brands pick wrong.
A 3PL (third-party logistics provider) is a company you pay to store your inventory and ship your customers' orders for you. The "P" stands for "party": you are the first party, your customer is the second, and the 3PL is the third party sitting between you. Most ecommerce brands start using one between 500 and 1,500 orders a month.
A 3PL — short for third-party logistics — is a company you pay to store your inventory and ship your customers' orders for you. The "P" stands for "party": you are the first party (the brand), your customer is the second party, and the 3PL is the third party sitting between you.
That's the technical definition. It's also the answer that makes the category feel more uniform than it actually is.
In practice, a 3PL for a Shopify DTC brand shipping 800 orders a month looks nothing like a 3PL for a $200M beverage company distributing pallets to Whole Foods. Both are third-party logistics providers. Neither does the other's job well. "3PL" covers at least four distinct operating models, and picking the wrong one is one of the most expensive unforced errors in ecommerce operations.
We'll get to the four shapes in a minute. First, what every 3PL actually does day to day.
The cleanest way to picture a 3PL is to follow one order from your storefront to your customer's door.
A customer checks out on your Shopify site at 9:14 a.m. The order pushes into your 3PL's system within seconds. A picker on the warehouse floor sees it on a handheld scanner, walks to the bin location for that SKU, and pulls the right unit. A packer at the next station boxes it with your branded mailer and packing slip, weighs it, prints a UPS Ground label, and stages it for the afternoon carrier pickup. UPS scans the box onto the truck at 4:00 p.m. Your customer gets a tracking email by 4:02. Three to five days later it lands on the doorstep.
That whole sequence — order in, package out — is the core of what you're buying. Everything else (receiving inbound shipments, returns, kitting, reporting) is supporting work around that one loop. A good 3PL runs the loop hundreds of thousands of times a day across thousands of brands. A great one runs it without you ever needing to call.
Every 3PL covers some version of six core functions. The ones that are strong versus weak in each area are what separates the shapes.
You (or your manufacturer) ship product to the 3PL's warehouse. They unload the trucks, count what arrived, match it against what you said was coming, and put it on shelves or in bin locations. Sloppy receiving is the root cause of a real share of later inventory problems — if the 3PL counts wrong on day one, you'll chase ghost inventory for months.
Good 3PLs give you a receiving SLA (usually 24-72 hours), charge per pallet or per unit for the work, and flag exceptions before they put anything away.
Your inventory lives in their warehouse. They charge you for the space, typically per cubic foot, per pallet position, or per bin. Storage is the most negotiable line item in most quotes and the one merchants most often overlook when comparing providers.
Two questions to ask: how do they calculate storage (average monthly or end-of-month snapshot?), and what's their policy on long-term storage fees for slow-moving SKUs?
This is the core service. When an order comes in, a picker grabs your product from its location, a packer boxes it with the right materials, and the box goes to a carrier pickup. A well-run 3PL does this in under 24 hours from order placement, with 99%+ accuracy.
The pricing shape varies wildly. Some 3PLs charge a flat per-order fee, some charge per unit, some tier by monthly volume, some bake shipping materials into the pick fee and some itemize every bubble mailer. We break down the full cost structure in the 3PL pricing guide.
The 3PL hands your package to UPS, USPS, FedEx, DHL, or a regional carrier. They negotiate the rates (usually much better than you could on your own), apply shipping rules (zone skipping, carrier selection by weight and destination), and manage pickups.
This is where distributed 3PL networks earn their fee. A package shipping from a warehouse in Atlanta to a customer in Georgia costs a fraction of the same package shipping from Los Angeles. A 3PL with multiple nodes can split your inventory and reduce your average shipping cost by 15-30% just by moving product closer to customers.
When a customer sends something back, the 3PL receives it, inspects it, and (based on your rules) restocks it, disposes of it, or routes it for liquidation. Returns are the part of fulfillment most merchants ignore when comparing 3PLs, and then loudly regret six months in.
Ask specifically: how long from return arrival to restock-available? What's the charge per return? What happens when the product arrives damaged or with the wrong SKU?
A modern 3PL plugs into your storefront (Shopify, Amazon, WooCommerce, BigCommerce), your marketplaces, and your ERP. Orders flow in, tracking flows out, inventory counts stay synced, and you can see what's happening in a dashboard without calling anyone.
The depth of the tech stack is the single biggest divider across the 3PL category. Some 3PLs are essentially warehouses with a thin EDI wrapper. Others are software companies that happen to also run warehouses. You feel the difference every day.
Every ecommerce piece about 3PLs tells you they store inventory and ship orders. Fewer tell you that "3PL" is a category label, not a product, and that the four dominant shapes within the category are optimized for completely different merchants.
Picking the right shape first — before you pick a specific company — is the highest-leverage decision in the whole process. The table is the cheat sheet; the sections below explain what each shape gets right and wrong.
| Shape | Sweet spot | Volume range (orders/mo) | Watch out for |
|---|---|---|---|
| Distributed DTC network | Shopify-era DTC brands wanting 2-day coverage | 500 – 20,000 | Heavy items, regulated categories, dedicated account management |
| Category specialist | Brands whose product needs specialized handling | 300 – 50,000+ | Lowest cost, multi-node national coverage, mixed product types |
| Enterprise contract 3PL | Multi-channel brands with retail + DTC + international | 50,000+ | SMB volumes, month-to-month contracts, slick Shopify dashboards |
| Marketplace fulfillment (FBA, etc.) | Amazon-first brands needing the Prime badge | Any (marketplace-only) | Multi-channel ops, Q4 storage fees, brand experience control |
Who they are: Multi-node 3PLs built specifically for Shopify-era DTC brands. Technology-first, API-driven, priced per-order, usually serving thousands of small-to-mid-sized brands in parallel.
Examples: ShipBob (roughly 60 fulfillment centers across North America, Europe, and Australia), ShipMonk (around a dozen US and international nodes), Flowspace (150+ partner warehouses), Deliverr.
Sweet spot: DTC brands shipping 500-20,000 orders a month, primarily through Shopify or similar storefronts, with shelf-stable products of roughly standard size and weight, who care about 2-day delivery coverage and self-serve onboarding.
Where they get weak: Heavy or bulky products, regulated categories (food, supplements, cosmetics), complex B2B, brands that want a dedicated account manager who knows their SKUs.
Who they are: 3PLs that intentionally narrow their customer list to one product category and build their operations around that category's quirks. Usually fewer warehouses, higher service cost, higher fit when your product matches.
Examples: Shipfusion for regulated CPG (food, beverage, supplements, cosmetics) with SQF-certified warehouses. Red Stag Fulfillment for heavy, bulky, and high-value goods, with a published accuracy SLA. Bergen Logistics for fashion and lifestyle, with bonded warehouse capabilities. Americold and Cold Chain 3PL for temperature-controlled goods.
Sweet spot: Brands whose product profile is the reason they struggle with generalist 3PLs. If you sell a 50-pound cast iron pan, a vitamin that needs FEFO rotation, or designer apparel that can't be folded, a specialist is almost always the right shape.
Where they get weak: Lowest landed cost. Multi-node national coverage. Brands that have a mix of product types that don't all fit the specialist's lane.
Who they are: Large-scale logistics providers running dedicated warehouses or shared operations for brands that move serious volume, often across DTC, wholesale, retail, and international.
Examples: GEODIS, Kenco Logistics, Saddle Creek Logistics, Buske Logistics.
Sweet spot: Brands shipping 50,000+ orders a month, or moving pallets to retailers (Walmart, Target, Costco), or needing omnichannel distribution, or operating with EDI and VAS requirements that consumer 3PLs simply don't do. If you've heard the words "routing guide" in a meeting this month, you're probably in this shape's target range.
Where they get weak: SMB brands who want month-to-month contracts. DTC-first operators who need a slick Shopify integration and an order dashboard. Anyone under 10,000 monthly orders — they'll usually lose you in minimum commits.
Who they are: Programs run by marketplaces to fulfill orders placed on that marketplace (and sometimes elsewhere).
Examples: Amazon FBA, Walmart Fulfillment Services, Shopify Fulfillment Network (before it was sold to Flexport).
Sweet spot: Brands whose sales are concentrated on a single marketplace — especially Amazon-first brands who need the Prime badge to stay competitive in the buy box.
Where they get weak: Multi-channel brands, anyone sensitive to storage fees during peak (Amazon's Q4 fees are brutal), anyone who wants control over packaging and brand experience. Marketplace fulfillment isn't technically a 3PL under the academic definition, but merchants compare the options side-by-side, so we include it here.
Worth naming. The right shape of 3PL for a brand shipping 200 orders a month from a one-state customer base is often no 3PL at all. More on this below.
Two of the most common questions we get: is Amazon a 3PL? Is FedEx? The technical answer for both is "no, but kind of." It depends which part of their business you're asking about.
Amazon FBA. Amazon's Fulfillment by Amazon program stores your inventory in their warehouses and ships orders to customers. That's logistics, performed by a third party, so it walks like a 3PL. The reason it usually gets called marketplace fulfillment instead: Amazon is also the storefront. They're not a neutral third party between you and your customer — they're the marketplace your customer is buying from. They also restrict where the inventory can go (only Amazon-channel orders, unless you pay extra for Multi-Channel Fulfillment) and how the customer experience looks (no branded inserts, no custom packaging). Most merchants compare FBA side-by-side with traditional 3PLs, which is why our matchmaker includes it. Academically, it sits in its own bucket.
FedEx and UPS. These are carriers. They move the package once it's been picked, packed, and labeled by someone else. A traditional 3PL hands the package to FedEx or UPS at the end of the order-flow loop above. FedEx does operate a 3PL arm (FedEx Supply Chain, formerly GENCO), and UPS owns several supply-chain businesses, but the consumer-facing FedEx and UPS your customers see on a tracking page are carriers, not 3PLs.
The shortest rule: if a company stores your inventory and picks orders for you, it's a 3PL. If it just moves packages someone else picked, it's a carrier. If it's also the place your customer bought from, it's a marketplace fulfillment service.
The honest version: most brands wait too long to outsource, and a smaller group outsources too early.
Signals it's time to move:
Not every brand should be using a 3PL. The flip side of "most brands wait too long" — and the part no 3PL website writes about, because no 3PL makes money from it — is that some brands outsource too early.
If any of the above sound like your situation, the matchmaker answer isn't "here's a 3PL" — it's "stay in-house a little longer, and use the time to get clean on order volume, SKU economics, and what your ideal partner profile will look like when you do outsource."
The short version: expect storage charges (per cubic foot, per bin, or per pallet), a per-order pick and pack fee (often $2.50-$5.50 for the first item, $0.25-$1.50 for additional items), shipping charges passed through at the 3PL's negotiated rate, and sometimes an account setup or onboarding fee.
A mid-volume DTC brand shipping 2,000 orders a month at an average of 1.5 items per order might spend $6,000-$10,000 a month in 3PL fees, before shipping. Shipping typically adds another $10,000-$25,000 depending on zones, weight, and service level.
Enterprise 3PLs quote custom — the $30K-plus platform fee is common before the first order ships. Category specialists land somewhere in between, with minimums that price out sub-500-order brands.
The 3PL business model itself is straightforward. They make money on three things: storage (they charge more per cubic foot than the space costs them), fulfillment labor (they price per-order or per-unit at a margin over their loaded labor cost), and shipping (they negotiate carrier rates well below what you could get on your own and pass through a portion of the savings). Value-added services — kitting, returns processing, special packaging — usually carry the highest margins, which is why salespeople ask early about your assortment complexity. None of this is bad; the business model is what funds the warehouses, software, and labor that make a 3PL useful. It just means the price you're first quoted is rarely the floor of what the relationship will cost you.
We cover the full math in the 3PL pricing guide, including the hidden fees that change quote quality after the first invoice.
"Third-party logistics" makes more sense once you see what the other parties are. The full spectrum looks like this:
| Term | Who | What they do | Real-world example |
|---|---|---|---|
| 1PL | First-party logistics | The brand handles its own logistics in-house — its own warehouse, its own packers, its own drivers | A local maker shipping orders from their garage with USPS pickup |
| 2PL | Second-party logistics | A provider of a specific transport mode — trucking, ocean freight, air freight — moving cargo on your behalf | Maersk moving a container; a regional trucking company |
| 3PL | Third-party logistics | A company that stores your inventory and fulfills your customer orders, plus arranges shipping | ShipBob, ShipMonk, Flowspace, Red Stag Fulfillment |
| 4PL | Fourth-party logistics | A company that manages your 3PLs and the rest of your supply chain — strategy, integration, single point of accountability | Accenture supply chain consulting; a fractional ops team coordinating multiple 3PLs |
| 5PL | Fifth-party logistics | A 4PL with a stronger technology and data analytics layer; often used interchangeably with 4PL in practice | Mostly a marketing term; the line between 4PL and 5PL is fuzzy |
A fulfillment center is the physical building where the work happens. A 3PL operates fulfillment centers — sometimes one, sometimes several dozen. The terms get used interchangeably in marketing, but the building is the facility and the 3PL is the company that runs it.
A freight broker arranges the movement of pallets and truckloads between shippers and carriers. Not an ecommerce fulfillment service. Freight brokers are relevant when product is moving from your manufacturer to your 3PL, or from your 3PL to a retailer.
Most ecommerce brands need a 3PL. Some very large ecommerce brands also need a 4PL. A few brands with retail distribution also need a freight broker for inbound moves. Almost no brand needs all three.
The shortest honest framework:
1. Figure out your shape first. Distributed DTC network, category specialist, enterprise contract, or marketplace fulfillment. Most brand-3PL mismatches start here — a food brand goes to a distributed DTC network because it's the name everyone knows, and discovers in month two that the network doesn't handle FEFO or SQF. Get the shape right before you look at specific companies.
2. Then filter by fit within the shape. Volume match, geography match, product handling, integrations, pricing transparency, account management style, customer references in your category.
3. Always talk to two or three. Quotes will differ by 40%+ for what looks like the same service. The way a 3PL answers your questions during the sales process tells you what you need to know about how they'll handle you as a customer.
4. Read between the lines on references. Good 3PLs will give you a customer reference in your category and your volume band. If they can't, that's information.
We break the full evaluation framework down in How to Choose a 3PL — product fit, geography, onboarding questions, references, contract terms, and the mistakes merchants make in the first 90 days.
A 3PL is a company that stores your inventory and ships your orders for you. The actual decision is which of four shapes is right for your product, your volume, and your geography — distributed DTC network, category specialist, enterprise contract 3PL, or marketplace fulfillment. Get the shape right, and even an average company within it will work for you. Get the shape wrong, and the best company in the wrong category will frustrate you in month two.
If you'd rather skip ahead, our matchmaker asks nine questions about your product, volume, and geography, and returns a short list of 3PLs built for your shape. No inbound calls from sales teams until you're ready.
3PL stands for "third-party logistics." The idea is that you (the brand) are the first party, your customer is the second party, and the company handling logistics on your behalf is the third.
Not quite. A fulfillment center is a physical building where orders get picked, packed, and shipped. A 3PL is the company that operates fulfillment centers — often several of them. In casual use the terms get swapped, but when you're evaluating providers the distinction matters: you're signing a contract with a company, not a building.
Most ecommerce brands start seriously considering a 3PL between 300 and 1,500 orders a month. The actual trigger is usually when in-house fulfillment starts costing more — in time, errors, or missed SLAs — than the fees a 3PL would charge. For some brands that's earlier because their product is heavy or specialized; for others it's later because their volume is regional and their process is tight.
Sometimes. At low volumes, self-fulfillment is usually cheaper on paper because you're not paying for anyone else's overhead. At higher volumes, a 3PL is almost always cheaper in total cost — better shipping rates, split inventory across nodes, no capital tied up in warehouse space, and no opportunity cost on founder time. The crossover point is usually between 500 and 1,500 orders a month, depending on product and geography.
Amazon FBA is Amazon's own fulfillment program for products sold on Amazon. Strictly, it's marketplace fulfillment, not third-party logistics — Amazon is the marketplace and the fulfiller. A traditional 3PL is independent of any marketplace and can fulfill orders from Shopify, your own site, Walmart, TikTok Shop, retail accounts, and yes, Amazon (via Amazon's Multi-Channel Fulfillment or Seller Fulfilled Prime). Most multi-channel brands end up using both, with FBA for Amazon volume and a 3PL for everything else.
A 3PL physically executes logistics — warehousing, picking, packing, shipping. A 4PL manages your 3PLs and the rest of your supply chain — strategy, coordination across multiple providers, and a single point of accountability. Most ecommerce brands only need a 3PL. Enterprise brands with multi-region operations and several 3PLs sometimes also need a 4PL to keep the whole picture coordinated.
Plan on 30-90 days from signed contract to live orders. Distributed DTC networks with self-serve onboarding can be faster — two to three weeks for a small catalog. Enterprise contract 3PLs can take six months or more, especially with custom EDI and VAS work. The main drivers are SKU count, integration complexity, and how clean your inventory data is going in.
Yes, but the capabilities vary enormously. Some 3PLs have international fulfillment centers (Europe, UK, Canada, Australia) and can store product locally for faster, cheaper delivery. Others only ship cross-border from a US warehouse. If international is a significant share of your orders, prioritize 3PLs with a real presence in your target markets over those that "can ship there" from the US.
Amazon's Fulfillment by Amazon (FBA) program operates like a 3PL — it stores your inventory and ships orders. But because Amazon is also the marketplace your customers buy from, FBA is usually classified as marketplace fulfillment rather than third-party logistics. The practical difference: FBA primarily fulfills Amazon orders (unless you pay extra for Multi-Channel Fulfillment), and you have limited control over packaging and brand experience. Most multi-channel brands use FBA for Amazon volume and a traditional 3PL for everything else.
FedEx is a carrier, not a 3PL. A carrier moves a package once someone else has picked, packed, and labeled it. A 3PL is the company doing the picking, packing, and labeling, and then handing the package to a carrier like FedEx or UPS. FedEx does operate a separate supply-chain division (FedEx Supply Chain, formerly GENCO), which is a 3PL — but the FedEx your customers see on a tracking page is the carrier, not the warehousing and fulfillment business.
Common 3PLs you'll encounter when evaluating fulfillment include ShipBob, ShipMonk, Flowspace, Red Stag Fulfillment, Shipfusion, Bergen Logistics, and Stord on the DTC side, plus larger enterprise providers like GEODIS, Kenco Logistics, and Saddle Creek Logistics. The right example for your brand depends on which of the four shapes you fit — see the shapes section above for who serves which kind of merchant.
3PLs make money on three things: storage (charging more per cubic foot of warehouse space than it costs them), fulfillment labor (pricing per-order or per-unit at a margin above loaded labor cost), and shipping (negotiating carrier rates well below your retail rates and passing through a portion of the savings). Value-added services like kitting, returns processing, and special packaging usually carry higher margins, which is why salespeople ask early about your assortment complexity.
A 3PL warehouse is a fulfillment facility run by a third-party logistics provider. It's where the 3PL stores its clients' inventory and runs the pick-pack-ship operations on their behalf. A single 3PL might operate one warehouse or several dozen. "3PL warehouse" is sometimes used interchangeably with "fulfillment center," but the warehouse is the physical building and the 3PL is the company that operates it.
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