With more than 40 product categories from used books to gourmet food, it manages to offer customers selection and simplicity.

FORBES: 2. Convenience

Dell, HP, Nokia and Research in Motion all reigned supreme in their product categories for long periods of time, and fell from grace hard because they did not notice or react quickly to the disruptions in technology around them.

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But from a product standpoint, the fastest growth will be seen in conventional device categories like accelerometers and radio frequency MEMS that target consumer applications.

FORBES: Magazine Article

The company decided to investigate, looking at 36 major sports advertisers across 11 product categories and measuring the degree of "lift" each got from its sports advertising and sponsorship programs.

FORBES: Magazine Article

Product categories mature and that maturity is resulting in higher production costs, more intense competition from rivals like Samsung and less rapid expansion of the global smartphone market.

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