Many corporate presentations include organisation charts, what are the main business units, and who are the people running them, and who reports to whom.
For some presentations, this relevant. If you are trying to sell a company or a business unit, it is important to see the people assets that an acquirer is getting. If you are presenting to a financial analyst it is important that she knows what financial data belongs to what business unit.
If you are trying to explain what your company does however, the organisation chart might not be the best way to do that. Most of the times, there is not a 1-1 match between business units and products. There are far more exciting ways to present what your company does than organisation chart boxes.
To you, the structure of your organisation is really important. The audience is likely to have another view.