Third Party
A third party is an entity that is not part of the customer-supplier relationship, but is involved in some way to support it. In a business context, third parties can take on various roles, such as:
-Analyst: A company that provides analysis or research on another company or industry
-Consultant: A company that provides advice or guidance to another company
-Partner: A company that has a strategic alliance or joint venture with another company
-Vendor: A company that sells products or services to another company