Killer feature

A killer feature or unique selling point is any feature of a product or service that proves so useful as to make it indispensable. Examples include spreadsheets as a feature of the PC, or social networking as a feature of the Internet.

Analogous to killer application, which specifically refers to software as a killer feature of its compatible hardware (meaning that the software sells the hardware), the term killer feature often more specifically refers to software features that sell the software.

See also

• Killer application
• Unique selling point
• Vendor lock-in
• Use case