Plesk Single Server Post-install Configuration – Choosing the Interface Type

To better suit the needs of different users,
Plesk offers two different user interface types, called views:

• Power User view is best for someone who uses Plesk for personal needs,
  for example, managing a mail server or running a personal website.
• Service Provider view is designed to suit the needs of traditional hosting providers
  who expect to serve a large number of customers. Service Provider view
  is available in Web Pro and Web Host editions.

Here you can read
the detailed description of the Plesk views.