How Ecommerce Fulfilment Works: The Complete Guide


Written by 
Dee Set Staff
 on 
16 March, 2026

dee set warehouse worker checking box

Online orders don’t magically appear on your customer’s doorstep (sadly). Behind every successful delivery is a carefully choreographed process designed to get your products from A to B on time and without any errors. So, if you’ve ever found yourself asking, ‘How does eCommerce fulfilment work?’, you’re in the right place.

In this guide, we’re getting into the nitty-gritty of eCommerce fulfilment, shining a light on what actually happens after a customer completes checkout and how expert partners like Dee Set help retailers keep everything running smoothly behind the scenes.

Without further ado, let’s get into it…

Why understanding eCommerce fulfilment matters

Even if you outsource fulfilment (which many growing retailers do), it’s important to understand the process. Why? Because fulfilment impacts everything – from the customer experience to your bottom line.

Knowing how the process works helps you:

  • Spot inefficiencies early
  • Ask the right questions of fulfilment partners
  • Scale without nasty surprises
  • Deliver consistently positive customer experiences

The guide covers the details of how eCommerce fulfilment works, but if you’re still not entirely clear on what eCommerce fulfilment is, we’ve got another handy guide for that: Understanding eCommerce Fulfilment: A Practical Guide for Retailers.

How does eCommerce fulfilment work? Step-by-step

eCommerce fulfilment is a multi-stage operation, with each step feeding directly into the next – miss one beat, and you’ll throw the whole rhythm off. Here’s how it works, step-by-step:

Step 1: Goods-in and inventory set-up

Before orders can be fulfilled, stock needs to arrive at the fulfilment centre and be logged correctly. If stock isn’t recorded accurately from the start, errors can ripple throughout the entire fulfilment process, from overselling to delayed dispatches.

This stage includes:

  • Receiving stock from suppliers or manufacturers
  • Checking quantities and conditions
  • Assigning SKUs and barcodes
  • Organising products within the warehouse

At Dee Set, products are booked into advanced warehouse systems as soon as they arrive, giving retailers immediate visibility of what’s available and ready to sell.

Step 2: Inventory management

Once stock is in place, ongoing inventory management keeps fulfilment ticking over. Strong inventory management protects margins, supports better planning, and keeps customers from seeing that dreaded “out of stock” message.

This stage involves:

  • Real-time stock tracking
  • Forecasting demand for peak periods
  • Preventing overstocking or stockouts

The Dee Set team uses real-time data and intelligent forecasting to help retailers stay ahead of demand and reduce waste.

Step 3: Order processing

As soon as a customer places an order, the order enters the fulfilment system automatically. The customer and delivery details are verified, and picking instructions are generated.

This automation ensures no orders are missed and no errors are made, helping orders move quickly from checkout to dispatch. Dee Set’s eCommerce fulfilment tech integrates seamlessly with online stores, which means orders flow straight into the warehouse without any manual handling.

Step 4: Picking

Picking is one of the most critical stages of eCommerce fulfilment. This is where warehouse teams locate the correct products for the order, scanning them to confirm accuracy. It may sound simple, but in reality, it’s easy to get wrong if you don’t have the right systems.

Picking errors can lead to incorrect orders, high return rates, and frustrated customers. At Dee Set, we know that precision at this stage is key to saving time, money, and your reputation – that’s why our warehouses support high-volume, high-accuracy picking, even during your busiest periods.

Step 5: Packing

This step is all about making sure the order is adequately packaged for shipping and involves protecting the products for transit and including branded materials where required. Good packaging is essential to reduce damage, reinforce brand perception, and improve the overall delivery experience for your customers.

Whether retailers choose standard packaging or fully branded boxes, we at Dee Set tailor the packing process to suit your brand’s requirements – because the unboxing experience matters much more than you might think!

Step 6: Shipping

A few things happen at the shipping stage:

  • The most suitable courier service is selected
  • Tracking information is generated
  • Orders are dispatched

At Dee Set, we have access to multiple couriers, which gives retailers who choose us as their eCommerce fulfilment partner ultimate flexibility around delivery speed, cost, and destination. This lets you meet customer expectations without overspending, building brand trust and encouraging repeat purchases.

Step 7: Returns management

A well-run returns process = happy customers. This stage typically includes:

  • Receiving returned items
  • Inspecting product condition
  • Restocking sellable goods
  • Processing refunds or exchanges efficiently

At Dee Set, we manage returns with speed and care, helping retailers build trust and loyalty with their customers.

dee set warehouse worker moving box

eCommerce fulfilment, the Dee Set way

Looking for an eCommerce fulfilment partner who can execute the process flawlessly? We’ve got you.

Our efulfilment services cover the entire journey, from goods-in and inventory management right through to shipping and returns. Powered by industry leading tech and supported by a dedicated team, we help retailers fulfil up to 10,000 unique orders per week, with capacity for even more during peak periods.

If you want a partner that supports:

  • Multi-channel fulfilment (including Amazon and eBay)
  • Real-time operational visibility
  • Actionable data insights to continuously optimise performance

…then we’re the right choice for you.

Get in touch today to find out more about our eCommerce fulfilment services and how they can help your retail business grow.

Dee Set Logistics Ltd/Dee Set Confectionery Ltd, trading as Dee Set, registered in England, Scotland and Wales. Registered No: SC208421/04297287.Vat No: 896110414.