One of the most important factors affecting marketing campaigns is that marketers do not align themselves with the needs of the users.
There is a need to think, feel and behave like your audience to communicate with them effectively, and this is why Persona Building is a major factor in a successful marketing campaign.
Creating characters that are a highly detailed representation of your target audience is called persona, and the process is called persona building. Personas are generally a composite of people that do exist.