Sometimes a company needs to announce something, or wants to have a better communication with its clients or suppliers. Quite often, the company needs to tell people about their history, about their experience as a company, etc. A press release is a good way to do this. A PR expert is in charge of writing the press release, but the company must provide all the information that the consultant needs.
These activities are intended to practise giving information about your company and about your job.

