A product matrix is a strategic tool that aids product managers in making informed decisions about product development and portfolio management by providing a side-by-side comparison of features, prices, market segments, and more. This matrix allows businesses to identify opportunities for expanding product lines without cannibalizing existing offerings, determine whether product categories are over- or underrepresented, and recognize underserved market segments. Additionally, it helps distinguish whether products complement or compete with each other and assists marketers in highlighting product differentiators to avoid consumer confusion. The product matrix is customizable and can be created using a standard spreadsheet, making it a versatile method for visualizing and analyzing a product line's overall structure and market positioning. It also serves a similar function for large corporations with multiple brands through a brand-product matrix, helping to display brand-product relationships and identify potential new brand opportunities. Overall, the product matrix contributes to more efficient product development and diverse product lines while optimizing research and development costs and maximizing market coverage.