Should retailers offer a wider range of products to better meet consumer needs, or, on the contrary, focus their offerings on a limited number of products? For retailers and manufacturers, the key challenge is finding the right balance between product variety and operational complexity.
A short product line allows for concentrated volumes, simplifies inventory management, and facilitates procurement. A long or broad product line offers more choice, provides more granular coverage of different segments, and allows for a wider range of price points, formats, or uses. However, it also increases the number of products and SKUs that must be planned, stocked, and restocked.
Increased variety thus makes it possible to meet market needs more comprehensively. On the other hand, the growing number of SKUs increases operational complexity, makes forecasting more difficult, and can lead to higher inventory levels.
The question, therefore, is not whether a narrow product range is inherently better than a broad one. Rather, it is a matter of identifying the structure and depth of the product range that can maximize value creation while maintaining an efficient supply chain.
What is a short run?
A limited product range is an offering consisting of a relatively small number of items within a category or product line.
It prioritizes focus over a wide variety of options. For example, a company can select a few formats, price points, or features designed to meet its customers’ key needs.
However, there is no universal threshold that would allow us to say that a product line is considered “small” if it consists of 10, 50, or 100 items. It all depends on the category, positioning, target market, and consumer expectations.
A selection of about ten items can represent a substantial offering in a highly specialized market and, conversely, be extremely limited in a category where consumers choose from a wide range of formats, brands, uses, or price points.
The concept must therefore be evaluated in light of the depth of the product line, the market structure, and the role played by the various products in the portfolio.
A narrow product range can thus consist of a single, highly focused product line or several lines, each with a limited number of SKUs. The total number of products is therefore less important than the consistency of the entire product offering.
What is a full product line?
A broad product range includes a larger number of SKUs and variants within one or more product lines.
The company is thus seeking to cater to a wider range of market needs: various price points, sizes, colors, capacities, brands, technologies, uses, and consumer segments.
Let’s take a category of home appliances. A narrow product line might offer a few representative models from the entry-level, mid-range, and high-end segments. A broad product line might include different levels of power, capacity, design, and features to more precisely meet consumer preferences.
A broader product range can better meet consumer needs when each product serves a sufficiently distinct purpose. However, each added SKU represents one more unit to manage throughout the supply chain.
A broad product line is therefore meaningful only if its scope covers truly distinct market segments. Simply increasing the number of different products within a single line without creating any perceptible differentiation may simply shift sales from one product to another.
That is what makes the comparison much more complex than a simple contrast between few choices and many choices.
What is the difference between product line width, depth, and length?
To properly compare a short product line and a long product line, it is helpful to distinguish between several aspects of a product line’s structure.
Product line breadth refers to the number of product lines or families offered by the company. Product line depth refers to the number of variants available within a single product line: sizes, models, price points, features, or characteristics. The length of the product line, on the other hand, refers to the total number of SKUs that make up the entire product line.
A company can therefore offer several product lines with relatively few variations in each, or, conversely, focus its offerings on a limited number of lines while offering a wide range of product options.
This distinction is essential for analyzing the performance of the product assortment. Complexity does not depend solely on the total number of SKUs, but also on how these SKUs are distributed across the product range and the demand they actually help meet. To maintain a coherent and high-performing product offering, it is therefore necessary to optimize the product line by taking into account its structure, the contribution of each SKU, and the actual needs it meets.
Short-range and long-range: What are the main differences?
The first difference, of course, concerns the number of products offered. But the implications go far beyond the size of the catalog.
A narrow product range tends to concentrate demand on a limited number of SKUs. As a result, sales volumes per SKU are potentially higher, which can improve inventory turnover and make it easier to analyze sales history.
On the contrary, a broad product line fragments demand across a larger number of SKUs. This fragmentation may be justified when each product meets a sufficiently distinct need, but it becomes problematic when several SKUs are highly interchangeable.
A narrow product range is generally characterized by a limited number of SKUs, a product offering focused on core needs, higher volumes per SKU, simpler inventory and procurement management, a lower risk of cannibalization, and potentially less granular coverage of certain segments.
A broad product line is characterized by a large number of SKUs, more extensive coverage of customer needs, a wider range of price points, formats, or uses, demand spread across more SKUs, more complex inventory management, more frequent forecasting, and an increased risk of overlap between SKUs.
However, a narrow product range is not necessarily more profitable. It all depends on the profitability and incremental value generated by the additional products.
What are the advantages of a narrow product line?
The primary advantage of a short product line is the concentration of production volumes.
When demand for a category is spread across 50 SKUs rather than 200, each SKU potentially benefits from a more detailed sales history. Since demand is less fragmented across SKUs, forecasts can become more reliable and inventory levels can be set more accurately.
A narrow product range also helps reduce the number of operational decisions. For each product, it is necessary to forecast demand, set inventory levels, place orders, manage product data, track performance, and, if necessary, account for supplier constraints.
Reducing the number of SKUs can therefore free up time for the Demand Planning teams and allow them to focus their attention on the highest-contributing products in the product portfolio.
Another benefit is inventory turnover. By focusing more demand on its core products, the company can minimize certain types of idle inventory and reduce its exposure to obsolescence or markdowns.
Product lifecycle management can also be simplified. Product launches, growth phases, maturity, and end-of-life stages involve fewer SKUs at any given time, making it easier to adjust forecasts and procurement policies.
Finally, a more streamlined offering can improve clarity when the existing options are sufficiently distinct from one another.
What are the limitations of a limited product line?
However, reducing complexity must not result in failing to adequately meet demand.
A product line that is too limited may fail to meet certain needs: a price point may be missing, a desired size may not be available, a feature may be lacking, a key brand may not be represented, or a specific use may be overlooked.
And this absence can lead to a loss of sales if consumers do not consider the remaining products to be sufficiently interchangeable. It can also give competitors the opportunity to capture certain market segments.
The risk, therefore, is confusing product line rationalization with the elimination of value.
When a product is discontinued, it is important to determine, among other things, what proportion of its sales can be shifted to another product and what proportion is likely to be lost permanently.
An SKU that generates little revenue can still play a strategic role if it serves a specific segment, supports the product line’s positioning, or meets a need that other products do not.
What are the advantages of a long-range product line?
The main advantage of a long-range system is its coverage capability.
The broader the product range, the better the company can meet a variety of needs and develop a detailed segmentation of its offerings.
It can offer several price points, develop high-end products, cater to specific uses, or tailor its products to different consumer profiles.
A broad product range can also strengthen a brand’s positioning relative to its competitors. If a competitor occupies a price point, format, or offers a feature that is missing from the brand’s lineup, expanding the product range can help fill that gap.
This allows the company to build a more cohesive product lineup across several segments and offer different customer journeys ranging from entry-level to mid-range to premium.
However, this benefit depends on one essential condition: each additional product must provide enough value to justify its inclusion.
Why does a broad product line complicate the supply chain?
From a supply chain perspective, expanding a product line has an automatic consequence: each additional SKU becomes one more unit that must be planned for, procured, and stocked.
But the challenge does not stem solely from the total number of products. It stems primarily from the fragmentation of demand.
Suppose a category sells 100,000 units annually. If these sales are spread across 20 SKUs, the theoretical average volume is 5,000 units per SKU. With 100 SKUs, it drops to 1,000 units.
In reality, distribution is obviously not uniform. Certain products account for the bulk of sales, while a long tail of SKUs has much lower turnover.
This increase in the number of sales cycles can make forecasting more difficult, especially when SKUs have limited sales history or experience intermittent demand.
Added to this are safety stock, minimum order quantities from suppliers, packaging, lead times, storage capacity, and the risk of obsolescence.
The product life cycle also plays a role. A product portfolio that includes many new products, mature products, and products in decline requires teams to manage very different demand patterns simultaneously.
The product range thus directly affects forecasts, inventory levels, and procurement.
Does a wide product range necessarily lead to more inventory?
Not necessarily.
The relationship between the number of SKUs and inventory is not strictly proportional. A company can manage a broad product range with controlled inventory levels if demand is predictable, lead times are short, and replenishment policies are effective.
But increasing the number of references increases the number of decisions that need to be made.
Each product has its own demand profile, service level, supplier constraints, and position in the product life cycle. Inventory parameters must therefore be sufficiently differentiated.
The issue becomes even more important when a company operates multiple distribution channels. A product may have high turnover in e-commerce and low demand in certain stores—or vice versa.
So the right question isn’t just: How many items are in the product line?
It is also necessary to determine how much capital and operational capacity are required to ensure the expected level of service across the entire product portfolio.
Beware of cannibalization in extensive product lines
One of the main pitfalls is to view the revenue from a new product as entirely incremental.
Let’s imagine the launch of a new product that generates 500,000 euros in sales. If 400,000 euros of that amount comes from purchases that would previously have been made on other items in the same product line, the actual incremental contribution is much lower.
The more similar the products are, the more critical this issue of cannibalization becomes.
The proliferation of variants can thus create the illusion of growth: each new product generates sales, but a significant portion of those sales simply reflects a redistribution of existing demand.
A product line expansion must therefore be analyzed across the entire product portfolio, not just based on the performance of the new SKU.
The goal is to maintain a cohesive product line, with each product addressing a distinct need.
Short-range vs. long-range: Which one should you choose?
There is no single optimal product range length that applies to all companies.
The decision depends on demand, positioning, expected profitability, the competitive landscape, and supply chain constraints.
To decide which references to keep, add, or remove, several factors must be taken into account:
Does the product address a truly different need?
Two products that are technically different may be perceived by consumers as perfectly substitutable.
Does it generate incremental demand?
A new SKU should generate more than just a shift in sales between products.
How much profit does it generate?
Revenue must be analyzed in relation to the margin, as well as to inventory and the resources required to manage the product line.
What kind of operational complexity does it create?
Forecasting, safety stock, minimum order quantity, storage, procurement, and obsolescence must be included in the analysis.
What role does it play in the product line architecture?
A benchmark can support entry-level offerings, premium offerings, differentiation, price positioning, or coverage of a strategic segment.
At what stage of its life cycle is it?
A new product, a mature product, and a product in decline cannot be evaluated using the same criteria.
Adapt the product line length to the distribution channels
Choosing between a short product line and a long product line does not mean offering the same selection at every retail location.
Consumer needs and demand levels vary by store, region, and distribution channel. Constraints also differ: a large store can carry a wider range of products, while a smaller retail location must make more selective choices.
A product that sells very well in a large urban retail store may have low turnover in a neighborhood store. The same logic applies to sales channels. In e-commerce, a broader product range may be appropriate, whereas in brick-and-mortar stores, limited space may necessitate a more limited selection.
The product line structure must therefore take local demand into account. A retailer can maintain a relatively broad overall product offering while tailoring the number and selection of items to each store.
Product range depth can thus vary by distribution channel without compromising the consistency of the overall offering: certain items may be reserved for e-commerce, while stores focus their assortment on the products most relevant to their local market.
The goal is to offer the right selection in the right place, without increasing the number of SKUs where demand does not justify it. Tailoring the product lineup to local demand also makes it easier to manage inventory and procurement.
Examples of a short product line and a long product line
Let’s take the example of a line of coffee makers. A compact line might consist of seven models: two entry-level models, three mid-range models, and two premium models. The goal is to cover the main price points and consumer needs with a limited number of clearly differentiated products.
A broad product line could cover the same segments while offering more variations—including different technologies, capacities, features, designs, and colors—as well as a wider selection within each price range. Consumers would then have a more finely tailored selection, allowing them to choose a product that more precisely meets their purchasing criteria.
But increasing the number of SKUs does not necessarily mean better meeting demand. If two machines fulfill the same need and are perceived as substitutes, the additional SKU may essentially shift sales from one product to another rather than generate additional demand.
The challenge, therefore, is to determine whether each variant addresses a sufficiently distinct need and generates incremental value that justifies the additional complexity it creates in terms of forecasting, inventory, and procurement.
The optimal range length is the one that maximizes the contribution
There is no such thing as an ideal product line length. A short product line concentrates volumes on fewer SKUs, which can make forecasting easier, improve inventory turnover, and simplify procurement. A long product line allows you to meet more needs and serve more market segments, but it can also fragment demand and increase the risk of overstocking, slow turnover, or product cannibalization.
Therefore, the decision should not be based solely on the number of SKUs. It is necessary to assess what each SKU actually contributes to the product line in terms of sales, profitability, substitutability, the demand it meets, and the inventory required to ensure its availability.
Ultimately, a product line’s performance depends less on its total number of products than on the ability of each product to contribute to a cohesive, differentiated product mix tailored to different consumer segments.
Optimizing a product line, therefore, means finding the right level of variety that meets consumer expectations without creating more complexity than the value it generates. This balance must be regularly reassessed as demand, purchasing behaviors, and product performance evolve.
FAQ: Short Range and Long Range
What is the difference between a short-range and a long-range system?
A narrow product line consists of relatively few items and focuses on core needs. A broad product line offers more items or variations to cater more precisely to different uses, segments, and price points.
What are the advantages of a short product line?
It can consolidate volumes, limit demand fragmentation, simplify inventory and procurement management, and reduce the number of SKUs to manage.
What are the advantages of a long-range model?
It makes it possible to meet a wider range of needs, segments, uses, and price points. However, it can increase operational complexity and lead to cannibalization among product lines.
What is the difference between range width and range depth?
“Width” refers to the number of product lines or product families offered, while “depth” refers to the number of variants available within a product line.
How can you tell if a product line is too long?
A buildup of slow-moving SKUs, significant cannibalization, dormant inventory, or increasing complexity may indicate that certain SKUs are no longer providing sufficient value.
