What is an example of a core business company?

Could you please elaborate on what you mean by a "core business company"? In the realm of business and finance, the term "core business" typically refers to the primary activities or services that a company engages in, which are central to its overall operations and strategy. An example of a CORE business company could be a technology firm that specializes in developing and selling software solutions. In this case, the core business would be the creation and marketing of software products, with all other activities such as consulting, training, or hardware sales being considered ancillary to the main focus. Is there a specific industry or type of company you had in mind when asking this question?