Aplanned channel system designed to improve distribution efficiency and cost-effectiveness by integrating various functions throughout the distribution chain is called a(n) marketing system.

Vertical marketing system.

Explanation:

A vertical marketing system (VMS) occurs when two companies come together, usually a wholesaler and retailer, to gain greater benefits to efficiently meet consumer demands.

In this system of union of companies, there is usually a large company and power to coordinate the activities of other parts of the channel, although there is union of organizations each part continues to carry out its own activities.

The main benefit of a VMS is the ability of the organization to control the production and sale processes of a good, which makes the process of anticipation of problems, and correction and optimization to keep up with market trends more effective.