You know how your organization is structured. It serves your clients and coordinates your staff.
BUT… Your website is not an org chart.
Organize for visitor needs, using terms they understand.
Users come to your website with specific needs and questions.
A website organized along org chart lines scatters the information they want and may confuse them.
Organizing for user needs makes their experience of the site simpler, and they’re more likely to stay on your site.