Any business or companies need to have a professional communicator that can effectively present to their potential customers. It takes proper training and education for one to actually become a professional communicator.
If you are a student and you wish to take up communications major, there are actually a broad of curriculum study for one to choose.
Once the students are provided with proper training and knowledge, these can be applied and used in the organization they work for.
Read about The Many Advantages That Sets Communications Major Apart From Other Degrees