Skip to main content
← Back to P Definitions

Product line

What Is a Product Line?

A product line is a group of related products sold by a single company under a shared brand, often targeting similar customer segments or serving complementary functions. This concept is a fundamental aspect of Corporate Finance, representing a strategic approach companies use to organize, market, and manage their offerings. Products within a line typically share common characteristics, such as function, price range, quality level, or distribution channels. By developing and managing product lines, businesses aim to maximize market penetration, leverage brand management, and enhance their overall financial performance.

Companies create product lines as a marketing strategy, aiming to attract and retain consumers who, once satisfied with one product, are more inclined to explore other offerings within the same line. This principle often leads to increased sales and an expansion of the customer base.

History and Origin

The concept of organizing products into lines evolved naturally with the growth of industrialization and the expansion of consumer markets. As companies moved beyond single-product offerings, particularly in the late 19th and early 20th centuries with the rise of mass production, the need for a structured approach to managing diverse goods became apparent. Early business leaders recognized the efficiency of grouping similar items for production, distribution, and marketing.

For instance, the evolution of companies like Apple Inc. clearly illustrates the development and expansion of product lines. Initially focused on personal computers, Apple progressively introduced distinct product lines such as the iPod for music, the iPhone for smartphones, and the iPad for tablets, each building on a core brand identity while serving different consumer needs.10 This expansion allowed the company to dominate various segments of the consumer electronics market.

Key Takeaways

  • A product line groups related products under a single brand, sharing attributes like function, price, or target customers.
  • It is a core business strategy used to organize, market, and optimize a company's offerings.
  • Effective product line management can enhance market share, improve profitability through economies of scale, and strengthen brand loyalty.
  • Companies often expand product lines to capture new market segments or introduce innovations, but they must also consider potential risks such as complexity and brand dilution.
  • Product lines are distinct from a company's broader "product mix," which encompasses all product lines offered.

Interpreting the Product Line

Interpreting a product line involves assessing its breadth, depth, and overall contribution to a company's strategic objectives. The "breadth" of a product line refers to the number of distinct product categories a company offers (e.g., a car manufacturer offering sedans, SUVs, and trucks). The "depth" refers to the number of variants within a single product category (e.g., various models of sedans, each with different features or price points).

A well-managed product line helps a company maintain its competitive advantage by catering to diverse customer segmentation while leveraging shared resources like manufacturing capabilities and marketing efforts. Businesses continuously evaluate their product lines to ensure they align with market demand, profitability goals, and overall strategic planning. Adjustments to a product line may involve extending it with new offerings, pruning underperforming products, or repositioning existing ones.

Hypothetical Example

Consider "Healthful Harvest Foods," a fictional company that primarily sells organic granola bars. Its initial product was the "Original Oat Crunch." Over time, Healthful Harvest Foods developed a product line for granola bars to cater to varying consumer preferences and dietary needs.

Their granola bar product line now includes:

  • Original Oat Crunch: The classic, high-fiber bar.
  • Nutty Protein Power: A higher-protein version for active consumers.
  • Berry Burst Delight: A fruit-filled option for those seeking a sweeter taste.
  • Grain-Free Goodness: A version without oats for customers with specific dietary restrictions.

Each of these items falls under the "Healthful Harvest Granola Bars" product line. They share the core identity of being organic, convenient snack bars, but they target slightly different niches within the health food market. This expansion allows Healthful Harvest Foods to capture more revenue streams from a broader consumer base while benefiting from shared supply chain and marketing efforts for their granola bar category.

Practical Applications

Product lines are integral to how businesses operate across various sectors, influencing everything from capital allocation to market positioning.

  • Consumer Goods: Companies like Procter & Gamble (P&G) exemplify extensive product line management. P&G successfully diversified its portfolio to include household cleaning products, personal care items, and baby care products, among others. Its diverse brands within these lines allow it to serve different consumer segments while maintaining a competitive edge.9
  • Automotive Industry: Auto manufacturers manage distinct product lines for sedans, SUVs, trucks, and electric vehicles. Each line serves different consumer needs and market segments, leveraging shared platforms and manufacturing processes where possible.
  • Financial Services: Banks and investment firms offer product lines such as checking accounts, savings accounts, credit cards, and loan products. Investment companies might have product lines for mutual funds, exchange-traded funds (ETFs), and retirement accounts, each tailored to different investor profiles.
  • Technology: Software companies often develop product lines for different user groups (e.g., consumer software, business solutions, enterprise platforms) or by functionality (e.g., operating systems, office suites, creative tools).
  • Government Classification: For statistical purposes, entities like the U.S. Census Bureau utilize systems such as the North American Industry Classification System (NAICS) to categorize businesses based on their primary economic activity and the products or services they produce.8 This classification helps in understanding industry structures and economic trends, indirectly reflecting how product lines fit into the broader economy.

Limitations and Criticisms

While product lines offer significant advantages, their expansion and management also come with notable limitations and potential criticisms. One major risk is the possibility of brand dilution if new products deviate too far from the core values or quality associated with the existing brand. This can confuse consumers and erode brand equity.7

Another significant challenge is cannibalization, where a new product within a line inadvertently competes with and reduces sales of an existing product from the same company.6 This can lead to lower overall revenue or a mere shift of sales rather than an increase. Expanding product lines also introduces increased operational complexity, demanding more intricate cost management, inventory control, and marketing efforts.5 This complexity can lead to higher overhead costs and stretched resources, potentially diminishing profit margins if not managed effectively.4

Furthermore, companies risk spreading themselves too thin by investing in too many product lines, diverting focus and resources from their most profitable core offerings. Examples of failed product launches from large companies, like Hewlett Packard's TouchPad or Apple's Newton, underscore the importance of thorough market research and a clear understanding of consumer demand before expanding a product line.3,2 Poor execution or a lack of market fit can result in substantial financial losses and reputational damage.

Product Line vs. Product Mix

The terms "product line" and "product mix" are often used interchangeably, but they represent distinct concepts within business management and diversification strategy.

A product line refers to a group of closely related products that a company offers. These products typically share common characteristics, such as being sold to the same customer groups, marketed through the same outlets, or falling within a specific price range. For example, a sports apparel company might have a "running shoes" product line, which includes various models for different types of runners (e.g., trail running, road running, sprint).

In contrast, the product mix (also known as product assortment or product portfolio) encompasses all the product lines and individual products a company offers for sale. It represents the total set of products available from a single firm. Using the sports apparel example, the company's entire product mix would include not only its "running shoes" product line but also its "basketball shoes" line, "athletic apparel" line, and "accessories" line. The product mix, therefore, provides a comprehensive view of a company's entire offering, while a product line focuses on a specific category of related products.1

FAQs

What are common strategies for managing a product line?

Companies employ several strategies to manage a product line effectively. These include line stretching, which involves adding products beyond the current range (either "downmarket" to capture lower-end consumers, "upmarket" to target higher-end consumers, or "two-way" to address both); line filling, which adds more items within the existing range to plug gaps; and line pruning, which involves removing unprofitable or outdated products to streamline offerings and improve efficiency. These strategies are part of a continuous process of optimizing product offerings.

How does a product line impact a company's profitability?

A well-managed product line can significantly enhance a company's profitability by increasing sales volume, attracting new customers, and leveraging shared production and marketing costs. By offering a range of products, a company can cater to diverse needs and price sensitivities, potentially increasing its overall market share. However, poorly managed product lines can lead to increased complexity, higher costs, and reduced profit margins, especially if new products cannibalize existing sales or demand disproportionate resources.

Can a service be considered part of a product line?

Yes, the concept of a "product line" extends beyond physical goods to include services. Service providers, such as banks, telecommunication companies, or consulting firms, often organize their offerings into service lines. For instance, a bank might offer a "checking account line" with various types of checking accounts (e.g., student, premium, business), each tailored to different customer needs. Similarly, a consulting firm might have a "strategic advisory line" that includes market entry strategies, organizational design, and merger and acquisition support services.

What is the difference between product line depth and product line length?

"Product line depth" refers to the number of distinct varieties or models within a single product item in a line. For example, if a specific model of smartphone comes in 3 colors and 2 storage capacities, it has a depth of 6 variants (3 colors * 2 capacities). "Product line length" (or breadth) refers to the total number of items or models within a particular product line. For instance, if a car manufacturer offers 5 different sedan models, its sedan product line has a length of 5. Both concepts are crucial for understanding the scope and variety of a company's offerings.

Why do companies sometimes discontinue products within a line?

Companies discontinue products within a line for several strategic reasons, often as part of a risk management or cost management effort. Reasons include low sales volume, declining profit margins, high production costs, obsolescence due to technological advancements, or a shift in consumer preferences. Discontinuing underperforming products allows a company to reallocate resources to more profitable ventures, reduce operational complexity, and prevent potential brand dilution. It's a critical decision aimed at optimizing the overall product portfolio.

AI Financial Advisor

Get personalized investment advice

  • AI-powered portfolio analysis
  • Smart rebalancing recommendations
  • Risk assessment & management
  • Tax-efficient strategies

Used by 30,000+ investors