The PESO Model for PR Public Relations and Marketing is a useful tool that can be used by marketing professionals to plan, manage and evaluate their work. The PESO Model for PR Public Relations and Marketing is a model that helps in planning, managing and evaluating the work of marketing professionals. It consists of four major elements: Planning - The planning process involves setting goals, analyzing the results and evaluating the impact of different activities on the overall strategy. Managing - The management process involves monitoring progress against goals, identifying obstacles, implementing corrective actions and evaluating results. Evaluating - The evaluation process includes determining whether the plan has been achieved or not.