refer(s) to a functional or divisional unit that operates by its own rules and guidelines and does not openly share information with other units.

Silos refer to a functional or divisional unit that operates by its own rules and guidelines and does not openly share information with other units.

Explanation:

A silo mindset is a refusal to exchange information with workers in the same organization from different divisions. This approach is seen as raising the productivity of the corporation and, at worst, leading to a distorted culture of the company.

A common reason of workplace silos is a failure to understand about how a single department or team integrates into the larger picture, which leads the team's executive or leader to concentrate on what we can refer to as local goals vs. company goals.