A persona is a representative, vivid profile of a typical person from the target audience.
Instead of referring to abstract production managers at a manufacturing plant, a persona distills this target group into a tangible figure, complete with a name, role, goals, and concerns. For example, Martin, a 48-year-old production manager responsible for a manufacturing operation with 60 employees, who is under pressure and skeptical of comprehensive solutions.
The persona is a fictional character, but not simply made up. Ideally, it is based on real insights, conversations, data, and experiences with customers. It brings together recurring patterns into a vivid picture.