blog/Basics

What is a WMS (warehouse management system)?

A messy warehouse is not noticed until an order is shipped incorrectly, merchandise is lost, or the system's inventory does not match reality. A WMS is the software that prevents just that.

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Equipo Aura
· 7 min reading

What does WMS mean?

WMS stands for Warehouse Management System, or Warehouse Management System. It is the software specialized in controlling and optimizing everything that happens within a warehouse: the reception of merchandise, its arrangement, counting, order preparation and dispatch.

While an ERP tells you how many units of a product you have in total, a WMS tells you exactly where each one is—in which aisle, on which shelf, in which box—and controls that the right person picks up the right product at the right time. It's the difference between "I have 200 sneakers" and "I have 200 sneakers, and I know where each pair is."

What is a WMS for?

The goal of a WMS is for the warehouse to be fast, accurate and traceable. These are its key functions:

  • Reception: register the arriving merchandise and verify that it matches the purchase order.
  • Locations: assign and control where each product is stored (aisle, rack, level).
  • Picking: guide the operator to pick up the products of an order using the most efficient route.
  • Packing: pack and verify that the order is complete before shipping it.
  • Real-time inventory: each movement updates the stock instantly.
  • Traceability: know who moved what and when, with barcode reading.

What is picking and packing?

Picking and packing are the two most important operations in a warehouse. Picking is the process of "picking": taking the products that make up an order from the shelves. Packing is "packaging": consolidating these products, verifying them and preparing them for shipping.

This is where a WMS makes a huge difference. In a manual warehouse, the operator walks around looking for products by heart and sometimes picks up the wrong one. A WMS tells you exactly which location to go to, in what order, and asks you to scan the barcode to confirm that you grabbed the correct item. The result: fewer errors, faster shipping, and customers who receive what they ordered.

Picking can also be optimized in several ways: by individual order, grouping several orders in a single route (batch picking) or by warehouse areas. A good WMS chooses the most efficient strategy based on volume, so that the operator walks as little as possible and supplies as much as possible. Those saved meters, multiplied by hundreds of orders per day, translate into real time and money.

When do you need a WMS?

Not every product business needs a WMS right away, but there are clear signs that you already need it:

  • You send incomplete orders or with wrong products.
  • System inventory never matches the physical count.
  • Searching for a product in the warehouse takes more time than it should.
  • You handle a high volume of orders and manual picking is no longer enough.
  • You work with products that require batch, expiration or serial number control.

How Aura solves it

Aura includes a WMS integrated into the same system where your sales and inventory live, so there is no disconnection between what you sell and what you ship. When an order comes in—whether from your online store, a marketplace, or the point of sale—Aura generates the assortment order, guides picking by barcode, and discounts inventory in real time.

The Aura warehouse supports location control, cell phone scanning as a barcode reader, and assortment logic such as FIFO/FEFO for expired products. And because everything is on the same platform, the inventory your seller, your web store, and your accountant see is always the same real number, not an old photo. That eliminates overselling and counting surprises.

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Frequently asked questions

What is the difference between a WMS and an ERP?

The ERP manages inventory at the business level (how much you have and how much it is worth). The WMS manages the warehouse at a physical level (where each unit is and how it moves). They complement each other, and in Aura they are integrated.

Do I need expensive barcode readers to use a WMS?

Not necessarily. Modern WMS, like Aura's, allow you to use the operator's cell phone as a barcode reader, without investing in specialized hardware.

Is a WMS suitable for a small warehouse?

Yes. Even in a small warehouse, a WMS reduces picking errors and maintains accurate inventory. The profit grows as the volume of orders increases.

What is FEFO in a WMS?

FEFO stands for “first out, first out.” It is an assortment rule for perishable products that ensures that what expires first is dispatched first, avoiding losses.