Outsourcing is the process of hiring a company or individual to handle tasks or projects that are typically performed by in-house staff. Marketing outsourcing is the practice of hiring a third-party agency or firm to manage all or part of your marketing efforts. There are many reasons why you might consider outsourcing your marketing, but chief among them is often a lack of internal resources. If your company doesn’t have the personnel, expertise, or budget to mount an effective marketing campaign, partnering with an outside firm can be an attractive option.