Old and New Model Public Human Resource: Old Model: This model is concerned with delivering the message to the customers or concerned people or society to increase knowledge among them towards new changes or any new product launch. It is conducted through hiring a major executive team, local newspaper, magazine or broadcast outlets that can deliver the message to the wide audience. New Model: Most of the firms prefer social media a PR model to deliver the message or communicate changes with the audience or customers and get feedback from them over the message. These feedbacks are followed and used by the firm in the organizational strategies that maintain relations with the customers for long-time.