Random Stow: How It Works and Why Amazon Uses It

Effective warehouse organization is often associated with the idea that each product should have its own predetermined location. Given that in modern warehouses, the number of these codes is increasing and storage needs are constantly changing, this approach is not always the most efficient.

Dynamic product placement, Random Stow, follows a different logic. Products are not necessarily stored by category or in fixed locations, but are dynamically placed in the appropriate available locations.

This particular method has become particularly well-known through its implementation by Amazon, which uses it to manage the large volume and variety of products in its fulfillment centers.

Thus, the seemingly “random” placement is actually part of an organized storage process.

But what is Random Stow in practice and why is it an option for a company with Amazon’s requirements? What advantages can it offer and how can a company integrate dynamic product placement into its operation?

What is Random Stow?

Random Stow is a storage method in which products do not have a permanent predetermined location. Instead, each product is placed in a suitable available location when it enters the warehouse regardless of where other products of the same category are located.

However, the term “Random” does not mean that the process is carried out without any organization. The location of each product is recorded precisely, so that it can be easily located when needed.

How does dynamic product placement work?

The operation of Random Stow is based on the continuous utilization of available warehouse locations, without each product code being bound to a specific point.

Upon receipt, products can be placed in suitable free locations, depending on factors such as available space, size or their characteristics.

Each new placement is recorded and linked to the corresponding product code. So even if two products of the same category are located in different parts of the warehouse, their exact location remains known and can be located when needed.

During the picking process, the employee is guided to the location where the product is located that he needs to collect to fulfill the order. In this way, the warehouse dynamically adapts to the continuous inflows and outflows of products, utilizing the available positions without the need to maintain permanent space for each code or category.

What are the advantages of Random Stow and why does Amazon use it?

Dynamic product placement offers significant advantages, especially in warehouses that manage a large number of codes and frequent changes in their inventory. Amazon, with the huge volume of products and orders it manages daily, is one of the most characteristic examples of applying this method.

So what are some of the main advantages?

Better utilization of storage space

Available positions can be used according to current needs, without leaving space reserved for specific codes.

There is greater flexibility

The warehouse can adapt more easily to continuous inflows and outflows, as well as to changes in demand.

More efficient management of a large number of products

The existence of a fixed position for each SKU is not necessary, which is particularly important for warehouses with a wide variety of products.

Faster storage process

Products can be placed in appropriate available positions without having to be transported to a specific, predetermined point.

For a company of Amazon’s size, the above offers greater flexibility and better utilization of its infrastructure, elements necessary for managing such a complex and constantly changing inventory.

How can a business implement Random Stow?

For Random Stow to work, the “random” placement cannot be truly random. Every time a product changes location, this information must be recorded so that it is known exactly where it is when the time comes to pick.

This is what makes the use of a Warehouse Management System (WMS) possible. By recording products and storage locations, workers do not have to rely on fixed locations or their memory to know where each code is. The information follows the product, even when its location changes.

Thus, the warehouse gains the flexibility to utilize every available location, while maintaining control of the inventory and its daily movements.

Dynamic product placement proves to us that technology can make warehouse management more flexible and efficient regardless of the size of a business or the volume of its daily operations.

At Hubin, we design solutions that meet the real needs of each warehouse and business. Through Hubin WMS, daily processes are organized and monitored with greater precision, from the receipt and placement of products to the picking and execution of orders.