Predominantly, a brand ambassador is known as a positive spokesperson, an opinion leader or a community influencer, appointed as an internal or external agent to boost product or service sales and create brand awareness. Today, "brand ambassador" as a term has expanded beyond celebrity branding to self-branding or personal brand management. Professional figures, such as good-will and non-profit ambassadors, promotional models, testimonials and brand advocates have formed as an extension of the same concept, taking into account the requirements of every company.