Vertical Market

What is that? I heard that several times, I don’t understand what it is but I have an assumption. Assumption which is very far from what it is really meant.

Helpful wiki said:

A vertical market is a group of similar businesses and customers which engage in trade based on specific and specialized needs. Often, participants in a vertical market are very limited to a subset of a larger industry (a niche market). An example of this sort of market is the market for point-of-sale terminals, which are often designed specifically for similar customers and are not available for purchase to the general public.

The activities of participants within any given vertical market are typically similar in that they aim at solving the same or similar problems. These markets are typically competitive, due to the overlapping focuses of the products and services that are provided to the customers.

The single defining characteristic of the participants in a vertical market is competition within a well-defined segment.

A vertical market is a market which meets the needs of a particular industry: for example, a piece of equipment used only by semiconductor manufacturers. It is also known as a niche market. [1]

A horizontal market is a market which meets a given need of a wide variety of industries, rather than a specific one: for example, word processing software.

I worked for a company that is in vertical marketing - meat industry, carpet, retail (hardware), etc.