undifferentiated marketing. Undifferentiated marketing is a strategy in which market segments differences are ignored and one product or service is offered to the entire market.
The Secretary of State, Secretary of the Treasury, Secretary of Defense, Secretary of Interior, Secretary of Agriculture, Secretary of Commerce, etc. are cabinet level positions in the president's cabinet. There are currently 15.
The Cabinet was established in Article II, Section 2 of the United States Constitution to provide a source of key advisors to the President. Today, the Cabinet includes the Vice President and 15 executive departments. Here's a primer on the departments, in order of their succession to the Presidency.