Order Fulfillment: How It Works for US Ecommerce Brands

Order fulfillment is the process of receiving, storing, picking, packing and shipping customer orders, and handling any returns that come back. A brand can run it in-house, hand it to a third-party logistics provider (3PL), or use a marketplace program such as Fulfillment by Amazon.

What is order fulfillment in ecommerce?

In ecommerce, order fulfillment covers everything between a customer clicking “buy” and the parcel arriving at their door. Orders arrive from several places, and each one shapes the work differently:

• Your own store (DTC): orders come from Shopify, WooCommerce or a similar platform, usually as small parcels to consumers, and the packaging is part of the brand experience.
• Marketplaces: Amazon, TikTok Shop, eBay and Walmart Marketplace each set their own rules for ship times, labels and tracking uploads.
• B2B and retail: wholesale and store replenishment orders ship in cartons or on pallets, often with retailer labeling and appointment requirements.

Order fulfillment is one part of the supply chain, not the whole of it. The supply chain also covers sourcing, manufacturing and freight into your warehouse. Fulfillment starts once sellable inventory is on the shelf and ends when the customer has the order, or has sent it back.

The order fulfillment process: 7 steps

Most fulfillment operations, in-house or outsourced, follow the same seven steps.

1. Receiving inventory. Stock arrives from your supplier or factory. The warehouse counts it against the purchase order or advance shipping notice, checks for damage, and records it in the system so it can be sold.
2. Storage and inventory management. Each item gets a location: a shelf, a bin or a pallet position. Accurate counts here are what let your store show the right stock level and avoid overselling. (How inventory management works for US brands.)
3. Order processing. The order syncs from your sales channel to the warehouse, usually automatically. The system checks the address, assigns the shipping method and releases the order for picking.
4. Picking. A picker collects the items for the order from their storage locations, often guided by a scanner or a pick list grouped to cut walking time.
5. Packing. Items are packed in the right box or mailer with protective fill, any branded inserts, and a packing slip. The shipping label goes on here. (Pick and pack fulfillment in the US.)
6. Shipping. The parcel is handed to a carrier, and tracking goes back to the sales channel so the customer gets a shipping confirmation. Carrier and service choice sets both the cost and the delivery time.
7. Returns. Returned items are received, inspected, and either restocked, refurbished or written off, and the customer is refunded or sent an exchange.

What is an order fulfillment system?

An order fulfillment system is the software that moves an order through those seven steps. It usually combines an order management system (OMS), which collects orders from every channel in one place, with a warehouse management system (WMS), which directs receiving, storage, picking and packing. Channel integrations keep stock levels and tracking in sync, so a sale on one channel updates the inventory every other channel sees.

Order fulfillment models

There are five common ways to run fulfillment. Many brands move from one to another as they grow.

Model	Who holds the inventory	Your control	Upfront cost	Scales with	Best for
In-house	You, in your own space	Full	High: space, staff, equipment	Your own hiring and space	Low volumes, or products that need special handling you want to own
3PL (outsourced)	The 3PL, in its warehouses	Shared, set by the contract	Low: setup and per-order fees	The 3PL’s network and staff	Growing brands that want to stop packing boxes themselves
Dropshipping	Your supplier	Low	Very low	Your supplier’s capacity	Testing products without buying stock
Marketplace programs (such as Fulfillment by Amazon)	The marketplace	Low, set by program rules	Low	The marketplace	Sales on that one marketplace
Hybrid	Split across two or more of the above	Mixed	Mixed	Each part separately	Brands with distinct channels or product types

Outsourced order fulfillment through a 3PL is the most common step up from in-house. You send inventory to the 3PL, connect your sales channels, and pay for storage, picking, packing and shipping as you use them. To compare providers on footprint, services and fit, see our guide to the best 3PL companies in the US, or estimate the cost with the 3PL cost calculator.

Order fulfillment warehouse vs fulfillment center

An order fulfillment warehouse, or fulfillment center, is a warehouse set up to ship individual orders to customers. A traditional warehouse is built mainly to store goods and move them out in bulk, by the pallet or the truckload. A fulfillment center turns stock over faster, holds more individual product types in smaller quantities, and is organized around picking and packing many small orders a day.

Order fulfillment in the US: what changes

The steps are the same everywhere, but a few things matter more when you fulfill orders across the United States.

• Carrier mix. The national parcel carriers are USPS, UPS and FedEx, alongside regional carriers that cover part of the country. Each prices differently by weight, size and distance, so the cheapest carrier changes from one order to the next. You can compare US shipping rates for your own parcels.
• Shipping zones. US carriers price ground parcels by zone, and the zone rises with the distance between the shipping and delivery ZIP codes. Inventory placed closer to your customers ships in lower zones, so it costs less and arrives sooner. That is the case for splitting inventory across US warehouses once your volume supports it.
• Multichannel stock. US brands often sell on their own site and on Amazon, TikTok Shop and Walmart Marketplace at the same time. Keeping one accurate stock count across all of them is what prevents overselling on one channel while stock sits idle for another.
• Nearshore options. Brands that source from outside the US sometimes add fulfillment in Mexico, close to the US border, as part of their network.

Order fulfillment metrics to track

These six metrics show whether fulfillment is working. Track them weekly, and by channel if you sell on several.

• Order cycle time: the time from order placed to order delivered. Order fulfillment cycle time is often split into the warehouse part (order placed to order shipped) and the carrier part (shipped to delivered).
• Order accuracy: orders shipped with the right items and quantities, divided by all orders shipped.
• On-time ship rate: orders shipped by their promised ship date, divided by all orders shipped.
• Dock-to-stock time: the time from inventory arriving at the warehouse to being available to sell.
• Cost per order: total fulfillment cost (storage, pick and pack, packaging, shipping) divided by the number of orders.
• Return rate: orders returned, divided by orders shipped.

Common order fulfillment challenges and how to fix them

Stockouts

Challenge: a best-seller sells out and orders back up. Fix: set reorder points from your sales rate and supplier lead time, and watch them weekly rather than at month end.

Mis-picks

Challenge: the wrong item or quantity goes out, which costs a return and a reshipment. Fix: scan every item at picking and at packing, so a mismatch stops the order before it ships.

Damage in transit

Challenge: products arrive broken or crushed. Fix: test packaging for your heaviest and most fragile items, and match box size to the product so it can’t move inside.

Peak season

Challenge: order volume jumps around promotions and holidays. Fix: send forecasts to your warehouse weeks ahead, stock up before carrier cut-off dates, and pre-build any bundles or kits.

Returns

Challenge: returns pile up unprocessed, so sellable stock sits idle and refunds run late. Fix: set a clear returns policy, inspect and restock returns quickly, and track the reasons customers give.

Multichannel inventory sync

Challenge: stock levels drift between channels, so one oversells while another shows stock you don’t have. Fix: run every channel from one inventory pool through connected software rather than separate manual counts.

How Locad fulfills orders in the US

Locad is a tech-enabled 3PL with a network of 25+ warehouses across 10 countries. In North America it fulfills from Texas and California, with nearshore fulfillment in Tijuana, Mexico.

Its software connects to 15+ sales channels, including Shopify, Amazon, TikTok Shop, eBay and WooCommerce. Inventory sits in one pool and is fulfilled across DTC, marketplace, B2B and retail orders, so a brand selling on several channels manages stock in one place.

Value-added services include custom packaging, branded inserts, kitting, bundling and subscription box fulfillment, plus virtual bundling and gift-with-purchase for peak promotions. Storage is ambient or air-conditioned. For brands expanding beyond the US, Locad also offers Importer of Record, Seller of Record and customs compliance services.

If you sell across DTC, marketplaces and retail and want one inventory pool behind them, talk to Locad about your order profile.

FAQ

What is order fulfillment?

Order fulfillment is the process of getting a customer’s order from your inventory to their door. It covers receiving and storing stock, processing the order, picking and packing it, shipping it, and handling returns.

What are the 7 steps of order fulfillment?

The seven steps are receiving inventory, storage and inventory management, order processing, picking, packing, shipping, and returns.

What is ecommerce order fulfillment?

Ecommerce order fulfillment is fulfillment for online orders: from your own store, from marketplaces such as Amazon and TikTok Shop, and from B2B or retail buyers. It is usually many small orders shipped straight to consumers.

What is an order fulfillment warehouse?

An order fulfillment warehouse, or fulfillment center, is a warehouse organized to pick, pack and ship individual customer orders, rather than mainly storing goods and moving them in bulk.

What is order fulfillment cycle time?

Order fulfillment cycle time is the time from an order being placed to the customer receiving it. Many brands also track the warehouse part on its own: order placed to order shipped.

What is the difference between order fulfillment and shipping?

Shipping is one step of order fulfillment: moving the packed parcel from the warehouse to the customer. Fulfillment also includes receiving and storing inventory, processing, picking and packing the order, and handling returns.

Should I outsource order fulfillment?

Outsourcing to a 3PL makes sense when packing orders takes time you need for growing the business, when you need warehouses closer to your customers, or when you sell on several channels. Keep it in-house if volumes are low or your products need handling you want to control.