Pros
They are specialized. This point is key since they will be able to provide you with complete advice on what your company needs. Also, they have experience in the field, which will be helpful when pursuing a large project. Many of the agencies tend to have contacts with other marketing and media experts. This will save you time. Leaving a project in the hands of an agency is the best time saver, since you will not have to worry about doing that work that may not allow you to move forward with issues that are also relevant. This will make you and your workers spend time in fields that require more attention. You will save money. It will seem very expensive the work of an agency, but in reality, the fewer mistakes made, the less expensive it will be. If you invest a good amount of money with an agency, you will have the certainty that this project will not have to be repeated, and it will be reflected in sales. CHEAP IS EXPENSIVE. Variety of knowledge. An agency not only has graphic designers, but also has a group of people specialized in different subjects, which will make the project much more complete. Many heads think better than one, and you will see this reflected in your work. Speed. If there are several people working on your project, they will get the final result faster.
Cons
There is a risk of not finding a suitable person for the job we need. On some occasions we hire a person who may never have had experience in the sector in which our company operates, which may cause misunderstandings or may not capture the essence of what we want. Generally, the freelancer has more clients, which will not be available 100% of the time, and may take longer to deliver the work. Everything you delegate to the freelancer will have an impact on the company's image, since they will be in charge of the visual part.