Attach rate

The attach rate is a concept used broadly in business, especially in marketing, to represent the number of units of a secondary product or service sold as a direct or implied consequence of the sale of a primary product or service. It is often expressed as a sales ratio of primary to secondary units, or as secondary units sold as a percent of primary. • Platform hardware type A has sold 1,000 units, and software publishers have subsequently sold 5,000 titles specific to Platform A, and • Platform B has sold 10,000 hardware units, and software publishers have subsequently sold 10,000 titles specific to Platform B. In this example, Platform A has a much higher attach rate (5 titles sold per hardware unit sold, or 5:1), versus Platform B (1 title sold per hardware unit sold, or 1:1) Hence, while in absolute terms, Platform B is outselling Platform A (by a factor of 10:1), the much higher attach rate of Platform A (5:1, vs. 1:1) has business implications. In particular, software publishers may view Platform A as the more attractive, depending on the rate of sales of each platform, because that platform only needs to sell an additional 1,000 units for their title sales to match the sales related to Platform B. ==Interpretations==

Marketing While complexities of real situations can obscure interpretation, attach rates can provide a measure for marketers of both primary and secondary products, allowing them to assess and even forecast the impact of the popularity of a given product (e.g., of a given gaming or other technology platform). Rapid sales of primary products such as game consoles, personal computers, and cell phones create the market for a host of secondary products. Conversely, in cases where the secondary product purchase requires a further customer decision—i.e., ignoring integral examples like the Bluetooth case—the sale of platform-specific secondary products provides an indication of longer term demand for that primary platform, or related versions of that platform, to continue to support the secondary product. Real circumstances in technology and other business sectors complicate interpretation of attach rates. These complications include the rapid evolution of both primary and secondary products (e.g., the evolution of gaming platforms away from being single use devices, and of games from having only a single means of distribution). As well, factors such as changes in attach rates early in life cycle (when behavior of early adopters of technology is unrepresentative of the overall market) and late (when consumer behavior may have changed with regard to how they use the primary product) also make interpretation and forecasting of attach rates difficult. Strategic Attach rates for products can factor into the decision of a primary product manufacturer to merge with or acquire a secondary product manufacturer, and can impact the valuation of businesses in such times of times of mergers and acquisitions. ==Example uses of the term==

• AT&T U-verse: "We are seeing clear improvements in access-line retention when consumers subscribe to U-verse, and the broadband attach rate for U-verse is greater than 90%." • WETA television programming. ==References==