A Persona is a typical example of a user, they act as a representation of a users' goal and are created as a means of building empathy with a user and connecting it with an overarching purpose. By creating them, we can not only use them to understand the users, but also the purpose of the product and business and ultimately helps focus the design to solve the user problem.
The Persona is built up of the relevant elements of the project, along with trends that have been identified during rebased and based on an audience, not a specific person. It will capture the audience motivations, the frustrations they face and the core soul of the audience. It is important not to use generalisations or stereotypes, and to update regularly throughout the project.
Along with a Persona template, they are also used in Problem Statements, User Stories and How Might We's. We can compile them from key quotes and other insights gathered during the research phase.