Process servers are defined as a person or business entity whos responsibility it is to server legal papers on the behalf of the court system. Process servers are employed to deliver court documents such as subpeonas, summons or complaints.

Process servers thus serve as both messengers of the courts, as well as legal witnesses to the delivery of the court documents. A process server is a necessary component of the delivery of many legal documents, and is designed to protect both parties in the case to prevent possible misinformation or confusion on the matter.