What is the term for a department that supplies information or services within a company?

The term "internal service provider" is apt for describing a department that supplies information or services within a company. An internal service provider operates within the organization and typically offers support functions, resources, or specialized services to other departments or employees. This support can include IT services, human resources, finance, and other operational functions essential for the smooth running of the company.

Internal service providers play a crucial role in ensuring that different parts of the organization can function effectively and efficiently. They facilitate communication, help streamline processes, and deliver necessary support services, empowering other departments to focus on their core activities without getting bogged down by operational complexities.

In contrast, a vendor typically refers to an external business entity that provides products or services to a company, rather than an internal component. An external provider emphasizes an outside source for services, while customer service pertains to the support offered to clients or customers, typically addressing their needs and issues rather than the internal workings of the organization. Therefore, the most accurate term in this context is indeed "internal service provider."