Product mix, its dimensions, and how product mix decisions shape marketing strategy

Meaning of product mix

A product mix (or product portfolio) is everything a company sells, taken together: all its product lines and the items in them. Deciding it is one of the product decisions in the marketing mix. A product line is a family of related products (similar job, buyers, outlets or price band); a product item is one particular version within a line.

Dimensions of the product mix

Consider a hypothetical company, Gangotri Consumer Ltd., with three lines: hair care (shampoo, conditioner, hair oil), skin care (face wash, moisturiser, sunscreen, body lotion) and oral care (toothpaste, toothbrush).

1. Width: the number of product lines: Gangotri has 3 (hair care, skin care, oral care).
2. Length: the total number of items in all lines: 3 + 4 + 2 = 9 items.
3. Depth: the number of versions of each product in a line: if its shampoo is sold in four variants (anti-dandruff, smooth, herbal, volume) and three sizes, the shampoo has a depth of 4 × 3 = 12.
4. Consistency: how closely related the lines are in end use, production and distribution: all three lines are personal-care products sold through the same outlets, so the mix is highly consistent.

How product mix decisions influence marketing strategy

1. Growth strategy. A firm can grow by widening (adding lines, e.g. Gangotri adding baby care), lengthening (adding items, e.g. a men's face wash), deepening (adding variants and sizes) or changing consistency (diversifying into unrelated areas or staying focused).
2. Market coverage and segmentation. A long, deep mix serves many segments and price points; a short mix focuses on a niche. Line stretching (downward, upward or both) lets a firm reach economy or premium buyers.
3. Competitive strategy. A full line can block competitors from gaps and win more shelf space; filling gaps in a line prevents rivals from entering.
4. Brand strategy. A consistent mix supports umbrella branding and a strong specialist image; a varied mix may need separate brands.
5. Pricing strategy. A mix allows price lining (economy, standard, premium versions) and bundle pricing.
6. Distribution strategy. Related lines share channels, lowering costs and giving bargaining power with retailers.
7. Promotion strategy. Consistent lines can be promoted together; wide, unrelated lines need separate campaigns.
8. Resource allocation and risk. A wide mix spreads risk across markets; pruning weak items frees resources for winners.
9. The costs of a bigger mix. Each new line or item needs money, people and management attention, and more lines are harder to coordinate; each extra variant adds stock to hold, forecast and manage. So a firm widens, lengthens or deepens its mix only where the extra sales cover these costs.

Conclusion

The product mix and its dimensions define what a company offers and to whom. Decisions on width, length, depth and consistency therefore shape the whole marketing strategy: segmentation, branding, pricing, distribution and competitive position. Such decisions should be reviewed regularly, as markets and competitors change.